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Encyclopedia > Isotope table (divided)
Half-lives (example: Gd)
145Gd Unstable
146Gd 1-10 days
149Gd 10-100 days
153Gd 100 days - 10 years
148Gd 10-10,000 years
150Gd >10,000 years
152Gd Natural radioactive
158Gd Stable

These isotope tables show all of the known isotopes of the chemical elements, arranged with increasing atomic number from left to right and increasing neutron number from top to bottom. Half-Life For a quantity subject to exponential decay, the half-life is the time required for the quantity to fall to half of its initial value. ... General Name, Symbol, Number gadolinium, Gd, 64 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Standard atomic weight 157. ... Water, Rabbit, and Deer: three of the 20 day symbols in the Aztec calendar, from the Aztec Sun Stone. ... A year is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ... Radioactive decay is the set of various processes by which unstable atomic nuclei (nuclides) emit subatomic particles. ... Image File history File links Circle-contradict. ... Neodymium (Nd) Standard atomic mass: 144. ... Isotopes are any of the several different forms of an element each having different atomic mass (mass number). ... The periodic table of the chemical elements A chemical element, or element for short, is a type of atom that is defined by its atomic number; that is, by the number of protons in its nucleus. ... It has been suggested that List of elements by atomic number be merged into this article or section. ... This article or section does not adequately cite its references or sources. ...


Half lives are indicated by the color of each isotope's cell (see color chart to the right). Colored borders indicate half lives of the most stable nuclear isomer states. Half-Life For a quantity subject to exponential decay, the half-life is the time required for the quantity to fall to half of its initial value. ... A nuclear isomer is a metastable or isomeric state of an atom caused by the excitation of a proton or neutron in its nucleus so that it requires a change in spin before it can release its extra energy. ...


The whole table can be found in one piece at Isotope table (complete). This isotope table shows all of the known isotopes of the chemical elements, arranged with increasing atomic numbers (proton numbers) from left to right and increasing neutron numbers from top to bottom. ...


The data for these tables came from Brookhaven National Laboratory which has an interactive Table of Nuclides with data on ~3000 nuclides. ≠ Aerial view of Brookhaven National Laboratory. ...

Contents

Isotopes for elements 1-15

Listing of known isotopes
p → 1 2
n ↓ H He 3 4
0 1H 2He Li Be 5 6
1 2D 3He 4Li 5Be B C 7
2 3T 4He 5Li 6Be 7B 8C N 8
3 4H 5He 6Li 7Be 8B 9C 10N O 9 10
4 5H 6He 7Li 8Be 9B 10C 11N 12O F Ne
5 6H 7He 8Li 9Be 10B 11C 12N 13O 14F 15Ne 11
6 7H 8He 9Li 10Be 11B 12C 13N 14O 15F 16Ne Na 12 13 14
7 9He 10Li 11Be 12B 13C 14N 15O 16F 17Ne 18Na Mg Al Si 15
8 10He 11Li 12Be 13B 14C 15N 16O 17F 18Ne 19Na 20Mg 21Al 22Si P
9 12Li 13Be 14B 15C 16N 17O 18F 19Ne 20Na 21Mg 22Al 23Si 24P
10 14Be 15B 16C 17N 18O 19F 20Ne 21Na 22Mg 23Al 24Si 25P
11 16B 17C 18N 19O 20F 21Ne 22Na 23Mg 24Al 25Si 26P
12 17B 18C 19N 20O 21F 22Ne 23Na 24Mg 25Al 26Si 27P
13 18B 19C 20N 21O 22F 23Ne 24Na 25Mg
26Al
27Si 28P
14 19B 20C 21N 22O 23F 24Ne 25Na 26Mg 27Al 28Si 29P
15 21C 22N 23O 24F 25Ne 26Na 27Mg 28Al 29Si 30P
16 22C 23N 24O 25F 26Ne 27Na 28Mg 29Al 30Si 31P
17 24N 25O 26F 27Ne 28Na 29Mg 30Al 31Si 32P
18 26O 27F 28Ne 29Na 30Mg 31Al 32Si 33P
19 28F 29Ne 30Na 31Mg 32Al 33Si 34P
20 29F 30Ne 31Na 32Mg 33Al 34Si 35P
21 31Ne 32Na 33Mg 34Al 35Si 36P
22 32Ne 33Na 34Mg 35Al 36Si 37P
23 34Na 35Mg 36Al 37Si 38P
24 35Na 36Mg 37Al 38Si 39P
25 37Mg 38Al 39Si 40P
26 38Mg 39Al 40Si 41P
27 40Al 41Si 42P
28 41Al 42Si 43P
29 44P
30 45P
31 46P

// Properties [1][2] In physics, the proton (Greek proton = first) is a subatomic particle with an electric charge of one positive fundamental unit (1. ... Hydrogen (H) Standard atomic mass: 1. ... Helium (He) Standard atomic mass: 4. ... This article or section does not adequately cite its references or sources. ... General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... General Name, Symbol, Number helium, He, 2 Chemical series noble gases Group, Period, Block 18, 1, s Appearance colorless Standard atomic weight 4. ... This article is being considered for deletion in accordance with Wikipedias deletion policy. ... Beryllium (Be) Standard atomic mass: 9. ... Protium can be several things: In chemistry, protium is the most common isotope of the element hydrogen; that has one proton and no neutrons. ... A diproton is a hypothetical type of helium nucleus consisting of two protons and no neutrons. ... General Name, Symbol, Number lithium, Li, 3 Chemical series alkali metals Group, Period, Block 1, 2, s Appearance silvery white/grey Atomic mass 6. ... General Name, Symbol, Number beryllium, Be, 4 Chemical series alkaline earth metals Group, Period, Block 2, 2, s Appearance white-gray metallic Atomic mass 9. ... Boron (B) Standard atomic mass: 10. ... Carbon (C) Standard atomic mass: 12. ... Deuterium, also called heavy hydrogen, is a stable isotope of hydrogen with a natural abundance in the oceans of planet Earth of approximately one atom in 6500 of hydrogen (~154 PPM). ... Helium-3 is a non-radioactive and light isotope of helium. ... General Name, Symbol, Number boron, B, 5 Chemical series metalloids Group, Period, Block 13, 2, p Appearance black/brown Atomic mass 10. ... General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Atomic mass 12. ... Nitrogen (N) Standard atomic mass: 14. ... Tritium (symbol T or 3H) is a radioactive isotope of hydrogen. ... Helium-4 is a non-radioactive and light isotope of helium. ... General Name, Symbol, Number nitrogen, N, 7 Chemical series nonmetals Group, Period, Block 15, 2, p Appearance colorless gas Atomic mass 14. ... Oxygen (O) Standard atomic mass: 15. ... Hydrogen-4 is a highly unstable isotope of hydrogen. ... Exotic helium isotopes are the unstable isotopes of helium. ... General Name, Symbol, Number oxygen, O, 8 Chemical series nonmetals, chalcogens Group, Period, Block 16, 2, p Appearance colorless (gas) very pale blue (liquid) Standard atomic weight 15. ... 18-F important source of positrons ... Neon (Ne) Standard atomic mass: 20. ... Hydrogen-5 is a highly unstable isotope of hydrogen. ... Exotic helium isotopes are the unstable isotopes of helium. ... General Name, Symbol, Number fluorine, F, 9 Chemical series halogens Group, Period, Block 17, 2, p Appearance Yellowish brown gas Atomic mass 18. ... General Name, Symbol, Number neon, Ne, 10 Chemical series noble gases Group, Period, Block 18, 2, p Appearance colorless Atomic mass 20. ... Hydrogen-6 has not been discovered yet, althought it would be possible by bombing Hydrogen-4 with Hydrogen-3 (tritium). ... Exotic helium isotopes are the unstable isotopes of helium. ... Sodium (Na) Standard atomic mass: 22. ... Hydrogen-7 is an isotope of hydrogen. ... Exotic helium isotopes are the unstable isotopes of helium. ... Carbon 12 is a stable isotope of the element carbon. ... General Name, Symbol, Number sodium, Na, 11 Chemical series alkali metals Group, Period, Block 1, 3, s Appearance silvery white Atomic mass 22. ... Magnesium (Mg) Standard atomic mass: 24. ... Aluminium (Al) Standard atomic mass: 26. ... Silicon (Si) Standard atomic mass: 28. ... Exotic helium isotopes are the unstable isotopes of helium. ... Carbon-13 is a stable isotope of carbon. ... Nitrogen-14 is a stable, non-radioactive isotope of the nitrogen element. ... General Name, Symbol, Number magnesium, Mg, 12 Chemical series alkaline earth metals Group, Period, Block 2, 3, s Appearance silvery white Atomic mass 24. ... General Name, Symbol, Number aluminium, Al, 13 Chemical series poor metals Group, Period, Block 13, 3, p Appearance silvery Atomic mass 26. ... It has been suggested that Silicons ranking be merged into this article or section. ... Phosphorus (P) Standard atomic mass: 30. ... Exotic helium isotopes are the unstable isotopes of helium. ... Carbon-14 is the radioactive isotope of carbon discovered February 27, 1940, by Martin Kamen and Sam Ruben. ... General Name, Symbol, Number phosphorus, P, 15 Chemical series nonmetals Group, Period, Block 15, 3, p Appearance waxy white/ red/ black/ colorless Standard atomic weight 30. ...

Isotopes for elements 16-30

p → 16
n ↓ S 17
12 Cl 18
13 29S Ar 19
14 30S 31Cl K 20
15 31S 32Cl 33Ar Ca
16 32S 33Cl 34Ar 35K 21
17 33S 34Cl 35Ar 36K 37Ca Sc 22
18 34S 35Cl 36Ar 37K 38Ca Ti 23
19 35S 36Cl 37Ar 38K 39Ca 40Sc 41Ti V 24
20 36S 37Cl 38Ar 39K 40Ca 41Sc 42Ti Cr 25
21 37S 38Cl 39Ar 40K 41Ca 42Sc 43Ti 44V 45Cr Mn 26
22 38S 39Cl 40Ar 41K 42Ca 43Sc 44Ti 45V 46Cr Fe 27
23 39S 40Cl 41Ar 42K 43Ca 44Sc 45Ti 46V 47Cr 48Mn 49Fe Co 28
24 40S 41Cl 42Ar 43K 44Ca 45Sc 46Ti 47V 48Cr 49Mn 50Fe 51Co Ni 29
25 41S 42Cl 43Ar 44K 45Ca
46Sc
47Ti 48V 49Cr 50Mn 51Fe 52Co 53Ni Cu 30
26 42S 43Cl 44Ar 45K 46Ca 47Sc 48Ti 49V 50Cr 51Mn 52Fe 53Co 54Ni 55Cu Zn
27 43S 44Cl 45Ar 46K 47Ca 48Sc 49Ti 50V 51Cr
52Mn
53Fe 54Co 55Ni 56Cu 57Zn
28 44S 45Cl 46Ar 47K 48Ca 49Sc 50Ti 51V 52Cr 53Mn 54Fe 55Co 56Ni 57Cu 58Zn
29 45S 46Cl 47Ar 48K 49Ca 50Sc 51Ti 52V 53Cr 54Mn 55Fe 56Co 57Ni 58Cu 59Zn
30 49K 50Ca 51Sc 52Ti 53V 54Cr 55Mn 56Fe 57Co 58Ni 59Cu 60Zn
31 50K 53Ti 54V 55Cr 56Mn 57Fe
58Co
59Ni 60Cu 61Zn
32 55V 56Cr 57Mn 58Fe 59Co 60Ni 61Cu 62Zn
33 57Cr 58Mn 59Fe
60Co
61Ni 62Cu 63Zn
34 59Mn 60Fe 61Co 62Ni 63Cu 64Zn
35 61Fe 62Co 63Ni 64Cu 65Zn
36 62Fe 63Co 64Ni 65Cu 66Zn
37 64Co 65Ni 66Cu 67Zn
38 66Ni 67Cu 68Zn
39 67Ni 68Cu 69Zn
40 68Ni 69Cu 70Zn
41 70Cu 71Zn
42 72Zn
43 73Zn
44 74Zn
45 75Zn
46 76Zn
47 77Zn

// Properties [1][2] In physics, the proton (Greek proton = first) is a subatomic particle with an electric charge of one positive fundamental unit (1. ... Sulfur (S) Standard atomic mass: 32. ... This article or section does not adequately cite its references or sources. ... General Name, Symbol, Number sulfur, S, 16 Chemical series nonmetals Group, Period, Block 16, 3, p Appearance lemon yellow Standard atomic weight 32. ... Chlorine (Cl) Standard atomic mass: 35. ... General Name, Symbol, Number chlorine, Cl, 17 Chemical series halogens Group, Period, Block 17, 3, p Appearance yellowish green Atomic mass 35. ... Argon (Ar) Standard atomic mass: 39. ... General Name, Symbol, Number argon, Ar, 18 Chemical series noble gases Group, Period, Block 18, 3, p Appearance colorless Atomic mass 39. ... Potassium (K) Standard atomic mass: 39. ... General Name, Symbol, Number potassium, K, 19 Chemical series alkali metals Group, Period, Block 1, 4, s Appearance silvery white Atomic mass 39. ... Calcium (Ca) Standard atomic mass: 40. ... General Name, Symbol, Number calcium, Ca, 20 Chemical series alkaline earth metals Group, Period, Block 2, 4, s Appearance silvery white Atomic mass 40. ... Scandium (Sc) Standard atomic mass: 44. ... General Name, Symbol, Number scandium, Sc, 21 Chemical series transition metals Group, Period, Block 3, 4, d Appearance silvery white Atomic mass 44. ... Titanium (Ti) Standard atomic mass: 47. ... General Name, Symbol, Number titanium, Ti, 22 Chemical series transition metals Group, Period, Block 4, 4, d Appearance silvery metallic Standard atomic weight 47. ... Vanadium (V) Standard atomic mass: 50. ... General Name, Symbol, Number vanadium, V, 23 Chemical series transition metals Group, Period, Block 5, 4, d Appearance silver-grey metal Atomic mass 50. ... Chromium (Cr) Standard atomic mass: 51. ... General Name, Symbol, Number chromium, Cr, 24 Chemical series transition metals Group, Period, Block 6, 4, d Appearance silvery metallic Atomic mass 51. ... Manganese (Mn) Standard atomic mass: 54. ... General Name, Symbol, Number manganese, Mn, 25 Chemical series transition metals Group, Period, Block 7, 4, d Appearance silvery metallic Atomic mass 54. ... Iron (Fe) Standard atomic mass: 55. ... General Name, Symbol, Number iron, Fe, 26 Chemical series transition metals Group, Period, Block 8, 4, d Appearance lustrous metallic with a grayish tinge Standard atomic weight 55. ... Cobalt (Co) Standard atomic mass: 58. ... wikipedia sucks big balls For other uses, see Cobalt (disambiguation). ... Nickel (Ni) Standard atomic mass: 58. ... General Name, Symbol, Number nickel, Ni, 28 Chemical series transition metals Group, Period, Block 10, 4, d Appearance lustrous, metallic and silvery with a gold tinge Atomic mass 58. ... Copper (Cu) Standard atomic mass: 63. ... General Name, Symbol, Number copper, Cu, 29 Chemical series transition metals Group, Period, Block 11, 4, d Appearance metallic pinkish red Standard atomic weight 63. ... Zinc (Zn) Standard atomic mass: 65. ... General Name, Symbol, Number zinc, Zn, 30 Chemical series transition metals Group, Period, Block 12, 4, d Appearance bluish pale gray Atomic mass 65. ...

Isotopes for elements 31-45

p → 31
n ↓ Ga 32
28 59Ga Ge
29 60Ga 61Ge
30 61Ga
31 62Ga 33
32 63Ga 64Ge As 34
33 64Ga 65Ge Se 35 36
34 65Ga 66Ge 68Se Br Kr 37
35 66Ga 67Ge 68As 69Se Rb
36 67Ga 68Ge 69As 70Se 72Kr 38
37 68Ga 69Ge 70As 71Se 72Br 73Kr 74Rb Sr 39
38 69Ga 70Ge 71As 72Se 73Br 74Kr 75Rb Y 40
39 70Ga
71Ge
72As 73Se 74Br 75Kr 76Rb 77Sr Zr
40 71Ga 72Ge 73As 74Se 75Br 76Kr 77Rb 78Sr
41 72Ga 73Ge 74As 75Se 76Br 77Kr 78Rb 79Sr 81Zr 41
42 73Ga 74Ge 75As 76Se
77Br
78Kr 79Rb 80Sr 81Y 82Zr Nb 42
43 74Ga 75Ge 76As
77Se
78Br
79Kr
80Rb 81Sr 82Y 83Zr 84Nb Mo
44 75Ga 76Ge 77As 78Se
79Br
80Kr 81Rb 82Sr 83Y 84Zr 43
45 76Ga 77Ge 78As
79Se
80Br
81Kr
82Rb
83Sr
84Y 85Zr 86Nb 87Mo Tc
46 77Ga 78Ge 79As 80Se 81Br 82Kr 83Rb 84Sr 85Y 86Zr 87Nb 88Mo 44
47 78Ga 79Ge 80As 81Se
82Br
83Kr
84Rb
85Sr
86Y 87Zr 88Nb 89Mo 90Tc Ru 45
48 79Ga 80Ge 81As 82Se 83Br 84Kr 85Rb 86Sr
87Y
88Zr 89Nb 90Mo 91Tc 92Ru Rh
49 80Ga 81Ge 82As 83Se 84Br
85Kr
86Rb
87Sr
88Y
89Zr
90Nb 91Mo 92Tc 93Ru
50 81Ga 82Ge 83As 84Se 85Br 86Kr 87Rb 88Sr
89Y
90Zr
91Nb
92Mo 93Tc 94Ru 95Rh
51 82Ga 83Ge 84As 85Se 86Br 87Kr 88Rb 89Sr
90Y
91Zr
92Nb
93Mo
94Tc 95Ru 96Rh
52 83Ga 84Ge 85As 86Se 87Br 88Kr 89Rb 90Sr
91Y
92Zr
93Nb
94Mo
95Tc
96Ru 97Rh
53 86As 87Se 88Br 89Kr 90Rb 91Sr 92Y 93Zr
94Nb
95Mo
96Tc
97Ru 98Rh
54 87As 88Se 89Br 90Kr 91Rb 92Sr 93Y 94Zr
95Nb
96Mo
97Tc
98Ru
99Rh
55 89Se 90Br 91Kr 92Rb 93Sr 94Y 95Zr 96Nb 97Mo 98Tc 99Ru 100Rh
56 91Br 92Kr 93Rb 94Sr 95Y 96Zr 97Nb 98Mo
99Tc
100Ru
101Rh
57 91Se 92Br 93Kr 94Rb 95Sr 96Y 97Zr 98Nb 99Mo 100Tc 101Ru 102Rh
58 94Kr 95Rb 96Sr 97Y 98Zr 99Nb 100Mo 101Tc 102Ru
103Rh
59 95Kr 96Rb 97Sr 98Y 99Zr 100Nb 101Mo 102Tc 103Ru 104Rh
60 97Rb 98Sr 99Y 100Zr 101Nb 102Mo 103Tc 104Ru
105Rh
61 97Kr 98Rb 99Sr 100Y 101Zr 102Nb 103Mo 104Tc 105Ru 106Rh
62 99Rb 102Zr 103Nb 104Mo 105Tc 106Ru 107Rh
63 102Y 104Nb 105Mo 106Tc 107Ru 108Rh
64 105Nb 106Mo 107Tc 108Ru 109Rh
65 106Nb 107Mo 108Tc 109Ru 110Rh
66 108Mo 109Tc 110Ru 111Rh
67 110Tc 111Ru 112Rh
68 112Ru 113Rh
69 113Ru 114Rh

// Properties [1][2] In physics, the proton (Greek proton = first) is a subatomic particle with an electric charge of one positive fundamental unit (1. ... Gallium (Ga) Standard atomic mass: 69. ... This article or section does not adequately cite its references or sources. ... General Name, Symbol, Number gallium, Ga, 31 Chemical series poor metals Group, Period, Block 13, 4, p Appearance silvery white   Atomic mass 69. ... Germanium (Ge) Standard atomic mass: 72. ... General Name, Symbol, Number germanium, Ge, 32 Chemical series metalloids Group, Period, Block 14, 4, p Appearance grayish white Atomic mass 72. ... Arsenic (As) Standard atomic mass: 74. ... General Name, Symbol, Number arsenic, As, 33 Chemical series metalloids Group, Period, Block 15, 4, p Appearance metallic gray Atomic mass 74. ... Selenium (Se) Standard atomic mass: 78. ... Se redirects here. ... Bromine (Br) Standard atomic mass: 79. ... Krypton (Kr) Standard atomic mass: 83. ... General Name, Symbol, Number bromine, Br, 35 Chemical series halogens Group, Period, Block 17, 4, p Appearance gas/liquid: red-brown solid: metallic luster Atomic mass 79. ... General Name, Symbol, Number krypton, Kr, 36 Chemical series noble gases Group, Period, Block 18, 4, p Appearance colorless Atomic mass 83. ... Rubidium (Rb) Standard atomic mass: 85. ... General Name, Symbol, Number rubidium, Rb, 37 Chemical series alkali metals Group, Period, Block 1, 5, s Appearance grey white Atomic mass 85. ... Strontium (Sr) Standard atomic mass: 87. ... General Name, Symbol, Number strontium, Sr, 38 Chemical series alkaline earth metals Group, Period, Block 2, 5, s Appearance silvery white metallic Atomic mass 87. ... Yttrium (Y) Standard atomic mass: 88. ... General Name, Symbol, Number yttrium, Y, 39 Chemical series transition metals Group, Period, Block 3, 5, d Appearance silvery white Atomic mass 88. ... Zirconium (Zr) Standard atomic mass: 91. ... General Name, Symbol, Number zirconium, Zr, 40 Chemical series transition metals Group, Period, Block 4, 5, d Appearance silvery white Atomic mass 91. ... Niobium (Nb) Standard atomic mass: 92. ... General Name, Symbol, Number niobium, Nb, 41 Chemical series transition metals Group, Period, Block 5, 5, d Appearance gray metallic Atomic mass 92. ... Molybdenum (Mo) Standard atomic mass: 95. ... General Name, Symbol, Number molybdenum, Mo, 42 Chemical series transition metals Group, Period, Block 6, 5, d Appearance gray metallic Atomic mass 95. ... Technetium (Tc) Has no stable isotopes. ... General Name, Symbol, Number technetium, Tc, 43 Chemical series transition metals Group, Period, Block 7, 5, d Appearance silvery gray metal Standard atomic weight [98](0) g·mol−1 Electron configuration [Kr] 4d5 5s2 Electrons per shell 2, 8, 18, 13, 2 Physical properties Phase solid Density (near r. ... Ruthenium (Ru) Standard atomic mass: 101. ... General Name, Symbol, Number Ruthenium, Ru, 44 Chemical series transition metals Group, Period, Block 8, 5, d Appearance silvery white metallic Atomic mass 101. ... Rhodium (Rh) Standard atomic mass: 102. ... General Name, Symbol, Number rhodium, Rh, 45 Chemical series transition metals Group, Period, Block 9, 5, d Appearance silvery white metallic Atomic mass 102. ...

Isotopes for elements 46-60

p → 46
Pd 47 48
n ↓ Ag Cd
51 97Pd
52 98Pd 99Ag 100Cd 49
53 99Pd 100Ag 101Cd In 50 51 52
54 100Pd 101Ag 102Cd Sn Sb Te
55 101Pd 102Ag 103Cd 104In 107Te
56 102Pd 103Ag 104Cd 105In 108Te
57 103Pd 104Ag 105Cd 106In 107Sn 109Te 53 54
58 104Pd
105Ag
106Cd 107In 108Sn I Xe 55
59 105Pd
106Ag
107Cd 108In 109Sn 110Sb 111Te 113Xe Cs
60 106Pd
107Ag
108Cd 109In 110Sn 111Sb 112Te 56
61
107Pd
108Ag
109Cd 110In 111Sn 112Sb 113Te 115Xe 116Cs Ba
62 108Pd
109Ag
110Cd
111In
112Sn 113Sb 114Te 115I 116Xe 117Cs
63 109Pd
110Ag
111Cd
112In
113Sn
114Sb 115Te 116I 117Xe 118Cs 119Ba 57
64 110Pd
111Ag
112Cd
113In
114Sn 115Sb 116Te 117I 118Xe 119Cs La
65 111Pd 112Ag
113Cd
114In
115Sn 116Sb 117Te 118I 119Xe 120Cs 121Ba
66 112Pd 113Ag 114Cd
115In
116Sn 117Sb 118Te 119I 120Xe 121Cs 122Ba
67 113Pd 114Ag
115Cd
116In
117Sn
118Sb
119Te
120I 121Xe 122Cs 123Ba 58
68 114Pd 115Ag 116Cd 117In 118Sn 119Sb 120Te 121I 122Xe 123Cs 124Ba 125La Ce
69 115Pd 116Ag 117Cd 118In
119Sn
120Sb
121Te
122I 123Xe 124Cs 125Ba 126La
70 116Pd 117Ag 118Cd 119In 120Sn 121Sb 122Te 123I 124Xe 125Cs 126Ba 127La 59
71 117Pd 118Ag 119Cd 120In
121Sn
122Sb
123Te
124I 125Xe 126Cs 127Ba 128La 129Ce Pr 60
72 118Pd 119Ag 120Cd 121In 122Sn 123Sb 124Te 125I 126Xe 127Cs 128Ba 129La 130Ce Nd
73 120Ag 121Cd 122In
123Sn
124Sb
125Te
126I
127Xe
128Cs 129Ba 130La 131Ce 132Pr
74 121Ag 122Cd 123In 124Sn 125Sb 126Te 127I 128Xe 129Cs 130Ba 131La 132Ce 133Pr 134Nd
75 122Ag 124In
125Sn
126Sb
127Te
128I
129Xe
130Cs
131Ba
132La 133Ce 134Pr 135Nd
76 123Ag 124Cd 125In 126Sn 127Sb 128Te 129I 130Xe 131Cs 132Ba 133La 134Ce 135Pr 136Nd
77 126In 127Sn 128Sb
129Te
130I
131Xe
132Cs
133Ba
134La 135Ce 136Pr 137Nd
78 127In 128Sn 129Sb 130Te 131I 132Xe 133Cs 134Ba 135La 136Ce 137Pr 138Nd
79 128In 129Sn 130Sb
131Te
132I 133Xe
134Cs
135Ba
136La 137Ce 138Pr 139Nd
80 129In 130Sn 131Sb 132Te 133I 134Xe
135Cs
136Ba
137La 138Ce 139Pr 140Nd
81 130In 131Sn 132Sb 133Te 134I 135Xe
136Cs
137Ba
138La
139Ce
140Pr 141Nd
82 131In 132Sn 133Sb 134Te 135I 136Xe 137Cs 138Ba 139La 140Ce 141Pr 142Nd
83 132In 133Sn 134Sb 135Te 136I 137Xe 138Cs 139Ba 140La 141Ce 142Pr 143Nd
84 134Sn 135Sb 136Te 137I 138Xe 139Cs 140Ba 141La 142Ce 143Pr 144Nd
85 136Sb 137Te 138I 139Xe 140Cs 141Ba 142La 143Ce 144Pr 145Nd
86 138Te 139I 140Xe 141Cs 142Ba 143La 144Ce 145Pr 146Nd
87 140I 141Xe 142Cs 143Ba 144La 145Ce 146Pr 147Nd
88 141I 142Xe 143Cs 144Ba 145La 146Ce 147Pr 148Nd
89 142I 143Xe 144Cs 145Ba 146La 147Ce 148Pr 149Nd
90 144Xe 145Cs 146Ba 147La 148Ce 149Pr 150Nd
91 145Xe 146Cs 148La 149Ce 150Pr 151Nd
92 150Ce 151Pr 152Nd
93 151Ce
94 154Nd

// Properties [1][2] In physics, the proton (Greek proton = first) is a subatomic particle with an electric charge of one positive fundamental unit (1. ... Palladium (Pd) Standard atomic mass: 106. ... General Name, Symbol, Number palladium, Pd, 46 Chemical series transition metals Group, Period, Block 10, 5, d Appearance silvery white metallic Atomic mass 106. ... Silver (Ag) Standard atomic mass: 107. ... Cadmium (Cd) Standard atomic mass: 112. ... This article or section does not adequately cite its references or sources. ... General Name, Symbol, Number silver, Ag, 47 Chemical series transition metals Group, Period, Block 11, 5, d Appearance lustrous white metal Atomic mass 107. ... General Name, Symbol, Number cadmium, Cd, 48 Chemical series transition metals Group, Period, Block 12, 5, d Appearance silvery gray metallic Atomic mass 112. ... Indium (In) Standard atomic mass: 114. ... General Name, Symbol, Number indium, In, 49 Chemical series poor metals Group, Period, Block 13, 5, p Appearance silvery lustrous gray Atomic mass 114. ... Tin (Sn) Standard atomic mass: 118. ... Antimony (Sb) Standard atomic mass: 121. ... Tellurium (Te) Standard atomic mass: 127. ... General Name, Symbol, Number tin, Sn, 50 Chemical series poor metals Group, Period, Block 14, 5, p Appearance silvery lustrous gray Standard atomic weight 118. ... General Name, Symbol, Number antimony, Sb, 51 Chemical series metalloids Group, Period, Block 15, 5, p Appearance silvery lustrous grey Atomic mass 121. ... General Name, Symbol, Number tellurium, Te, 52 Chemical series metalloids Group, Period, Block 16, 5, p Appearance silvery lustrous gray Atomic mass 127. ... Although iodine (I) has multiple isotopes, only one of these isotopes is stable; as such, it is considered a monoisotopic element. ... Xenon (Xe) Standard atomic mass: 131. ... General Name, Symbol, Number iodine, I, 53 Chemical series halogens Group, Period, Block 17, 5, p Appearance violet-dark gray, lustrous Atomic mass 126. ... General Name, Symbol, Number xenon, Xe, 54 Chemical series noble gases Group, Period, Block 18, 5, p Appearance colorless Atomic mass 131. ... Caesium (Cs) Standard atomic mass: 132. ... General Name, Symbol, Number caesium, Cs, 55 Chemical series alkali metals Group, Period, Block 1, 6, s Appearance silvery gold Atomic mass 132. ... Barium (Ba) Standard atomic mass: 137. ... General Name, Symbol, Number barium, Ba, 56 Chemical series alkaline earth metals Group, Period, Block 2, 6, s Appearance silvery white Atomic mass 137. ... Lanthanum (La) Standard atomic mass: 138. ... General Name, Symbol, Number lanthanum, La, 57 Chemical series lanthanides Group, Period, Block 3, 6, f Appearance silvery white Atomic mass 138. ... Cerium (Ce) Standard atomic mass: 140. ... General Name, Symbol, Number cerium, Ce, 58 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 140. ... Praseodymium (Pr) Standard atomic mass: 140. ... General Name, Symbol, Number praseodymium, Pr, 59 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance grayish white Standard atomic weight 140. ... Neodymium (Nd) Standard atomic mass: 144. ... General Name, Symbol, Number neodymium, Nd, 60 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white, yellowish tinge Atomic mass 144. ...

Isotopes for elements 61-75

p → 61 62 63
Pm Sm Eu
n ↓ 137Sm 64
76 137Pm 138Sm 139Eu Gd
77 138Pm 139Sm 140Eu 65
78 139Pm 140Sm 141Eu 142Gd Tb 66
79 140Pm 141Sm 142Eu 143Gd Dy 67 68 69
80 141Pm 142Sm 143Eu 144Gd Ho Er Tm 70
81 142Pm 143Sm 144Eu 145Gd 146Tb 147Dy Yb 71
82 143Pm 144Sm 145Eu 146Gd 147Tb 148Dy 150Er 151Tm Lu 72
83 144Pm 145Sm 146Eu 147Gd 148Tb 149Dy 150Ho 151Er Hf
84 145Pm 146Sm 147Eu 148Gd 149Tb 150Dy 151Ho 152Er 153Tm 154Yb 155Lu
85 146Pm 147Sm 148Eu 149Gd 150Tb 151Dy 152Ho 153Er 154Tm 155Yb 156Lu 157Hf 73 74
86 147Pm 148Sm 149Eu 150Gd 151Tb 152Dy 153Ho 154Er 155Tm 156Yb 158Hf Ta W
87
148Pm
149Sm
150Eu
151Gd 152Tb 153Dy 154Ho 155Er 156Tm 157Yb 159Hf
88 149Pm 150Sm 151Eu 152Gd 153Tb 154Dy 155Ho 156Er 157Tm 158Yb 160Hf 162W
89 150Pm 151Sm
152Eu
153Gd 154Tb 155Dy 156Ho 157Er 158Tm 161Hf 163W
90 151Pm 152Sm 153Eu 154Gd 155Tb 156Dy 157Ho 158Er 159Tm 160Yb 161Lu 164W 75
91 152Pm 153Sm
154Eu
155Gd
156Tb
157Dy 158Ho 159Er 160Tm 161Yb 162Lu 165W Re
92 153Pm 154Sm 155Eu 156Gd 157Tb 158Dy 159Ho 160Er 161Tm 162Yb 166W
93 154Pm 155Sm 156Eu 157Gd
158Tb
159Dy 160Ho 161Er 162Tm 163Yb 164Lu 166Ta
94 156Sm 157Eu 158Gd 159Tb 160Dy 161Ho 162Er 163Tm 164Yb 165Lu 166Hf 167Ta
95 157Sm 158Eu 159Gd 160Tb 161Dy 162Ho 163Er 164Tm 165Yb 166Lu 167Hf 168Ta 170Re
96 159Eu 160Gd 161Tb 162Dy
163Ho
164Er 165Tm 166Yb 167Lu 168Hf 169Ta 170W
97 160Eu 161Gd 162Tb 163Dy 164Ho 165Er 166Tm 167Yb 168Lu 169Hf 170Ta 171W 172Re
98 162Gd 163Tb 164Dy 165Ho 166Er 167Tm 168Yb
169Lu
170Hf 171Ta 172W
99 164Tb 165Dy
166Ho
167Er
168Tm
169Yb
170Lu 171Hf 172Ta 173W 174Re
100 166Dy 167Ho 168Er 169Tm 170Yb
171Lu
172Hf 173Ta 174W 175Re
101 167Dy 168Ho 169Er 170Tm 171Yb
172Lu
173Hf 174Ta 175W 176Re
102 169Ho 170Er 171Tm 172Yb 173Lu 174Hf 175Ta 176W 177Re
103 170Ho 171Er 172Tm 173Yb 174Lu 175Hf 176Ta 177W 178Re
104 172Er 173Tm 174Yb 175Lu 176Hf 177Ta 178W 179Re
105 173Er 174Tm
175Yb
176Lu
177Hf
178Ta 179W 180Re
106 175Tm
176Yb
177Lu
178Hf
179Ta 180W 181Re
107 176Tm 177Yb 178Lu
179Hf
180Ta
181W
182Re
108 178Yb 179Lu
180Hf
181Ta 182W 183Re
109 180Lu 181Hf
182Ta
183W
184Re
110
182Hf
183Ta 184W 185Re
111 183Hf 184Ta
185W
186Re
112 184Hf 185Ta 186W 187Re
113 185Hf 186Ta 187W 188Re
114 188W 189Re
115 189W 190Re
116 190W 191Re
117 192Re

// Properties [1][2] In physics, the proton (Greek proton = first) is a subatomic particle with an electric charge of one positive fundamental unit (1. ... Promethium (Pm) Has no stable isotopes. ... Samarium (Sm) Standard atomic mass: 150. ... Europium (Eu) Standard atomic mass: 151. ... General Name, Symbol, Number promethium, Pm, 61 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance metallic Atomic mass [145](0) g/mol Electron configuration [Xe] 4f5 6s2 Electrons per shell 2, 8, 18, 23, 8, 2 Physical properties Phase solid Density (near r. ... General Name, Symbol, Number samarium, Sm, 62 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 150. ... This article or section does not adequately cite its references or sources. ... Gadolinium (Gd) Standard atomic mass: 157. ... General Name, Symbol, Number gadolinium, Gd, 64 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Standard atomic weight 157. ... Terbium (Tb) Standard atomic mass: 158. ... General Name, Symbol, Number terbium, Tb, 65 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 158. ... Dysprosium (Dy) Standard atomic mass: 162. ... General Name, Symbol, Number dysprosium, Dy, 66 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 162. ... Holmium (Ho) Standard atomic mass: 164. ... Erbium (Er) Standard atomic mass: 167. ... Thulium (Tm) Standard atomic mass: 168. ... General Name, Symbol, Number holmium, Ho, 67 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 164. ... General Name, Symbol, Number erbium, Er, 68 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 167. ... General Name, Symbol, Number thulium, Tm, 69 Chemical series lanthanides Group, Period, Block ?, 6, f Appearance silvery gray Atomic mass 168. ... Ytterbium (Yb) Standard atomic mass: 173. ... Yb redirects here; for the unit of information see Yottabit General Name, Symbol, Number ytterbium, Yb, 70 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 173. ... Lutetium (Lu) Standard atomic mass: 174. ... General Name, Symbol, Number lutetium, Lu, 71 Chemical series lanthanides Group, Period, Block n/a, 6, d Appearance silvery white Atomic mass 174. ... Hafnium (Hf) Standard atomic mass: 178. ... General Name, Symbol, Number hafnium, Hf, 72 Chemical series transition metals Group, Period, Block 4, 6, d Appearance gray steel Atomic mass 178. ... Tantalum (Ta) Standard atomic mass: 180. ... Tungsten (W) Standard atomic mass: 183. ... General Name, Symbol, Number tantalum, Ta, 73 Chemical series transition metals Group, Period, Block 5, 6, d Appearance gray blue Atomic mass 180. ... General Name, Symbol, Number tungsten, W, 74 Chemical series transition metals Group, Period, Block 6, 6, d Appearance grayish white, lustrous Atomic mass 183. ... Rhenium (Re) Standard atomic mass: 186. ... General Name, Symbol, Number rhenium, Re, 75 Chemical series transition metals Group, Period, Block 7, 6, d Appearance grayish white Atomic mass 186. ...

Isotopes for elements 76-90

p → 76
Os 77
n ↓ Ir 78
93 169Os Pt 79
94 170Os 171Ir Au 80
95 171Os 172Ir 173Pt Hg
96 172Os 171Ir 174Pt 175Au
97 173Os 174Ir 175Pt 176Au 177Hg
98 174Os 175Ir 176Pt 177Au 178Hg
99 175Os 176Ir 177Pt 178Au 179Hg 81
100 176Os 177Ir 178Pt 179Au 180Hg Tl 82
101 177Os 178Ir 179Pt 181Hg Pb
102 178Os 179Ir 180Pt 181Au 182Hg
103 179Os 180Ir 181Pt 182Au 183Hg 184Tl 185Pb 83
104 180Os 181Ir 182Pt 183Au 184Hg 185Tl 186Pb Bi
105 181Os 182Ir 183Pt 184Au 185Hg 186Tl 187Pb 84
106 182Os 183Ir 184Pt 185Au 186Hg 187Tl 188Pb 189Bi Po 85
107 183Os 184Ir 185Pt 186Au 187Hg 188Tl 189Pb 190Bi At
108 184Os 185Ir 186Pt 187Au 188Hg 189Tl 190Pb 191Bi
109 185Os 186Ir 187Pt 188Au 189Hg 190Tl 191Pb 192Bi 193Po 194At
110 186Os 187Ir 188Pt 189Au 190Hg 191Tl 192Pb 193Bi 194Po 195At 86
111 187Os 188Ir 189Pt 190Au 191Hg 192Tl 193Pb 194Bi 195Po 196At Rn
112 188Os 189Ir 190Pt 191Au 192Hg 193Tl 194Pb 195Bi 196Po 197At 87
113
189Os
190Ir
191Pt 192Au 193Hg 194Tl 195Pb 196Bi 197Po 198At Fr
114
190Os
191Ir
192Pt 193Au 194Hg 195Tl 196Pb 197Bi 198Po 199At 200Rn 88
115 191Os
192Ir
193Pt
194Au
195Hg
196Tl 197Pb 198Bi 199Po 200At 201Rn Ra
116
192Os
193Ir
194Pt
195Au
196Hg 197Tl 198Pb 199Bi 200Po 201At 202Rn 203Fr 89
117 193Os 194Ir
195Pt
196Au
197Hg
198Tl 199Pb 200Bi 201Po 202At 203Rn 204Fr Ac
118 194Os 195Ir 196Pt
197Au
198Hg
199Tl 200Pb 201Bi 202Po 203At 204Rn 205Fr 206Ra
119 195Os 196Ir 197Pt 198Au 199Hg 200Tl 201Pb 202Bi 203Po 204At 205Rn 206Fr 207Ra 90
120 196Os 197Ir 198Pt 199Au 200Hg 201Tl
202Pb
203Bi 204Po 205At 206Rn 207Fr 208Ra 209Ac Th
121 198Ir 199Pt 200Au 201Hg 202Tl
203Pb
204Bi 205Po 206At 207Rn 208Fr 209Ra 210Ac
122 200Pt 201Au 202Hg 203Tl
204Pb
205Bi 206Po 207At 208Rn 209Fr 210Ra 211Ac
123 201Pt 202Au 203Hg 204Tl 205Pb 206Bi 207Po 208At 209Rn 210Fr 211Ra 212Ac 213Th
124 203Au 204Hg 205Tl 206Pb 207Bi 208Po 209At 210Rn 211Fr 212Ra 213Ac 214Th
125 204Au 205Hg 206Tl
207Pb
208Bi 209Po 210At 211Rn 212Fr 213Ra 214Ac 215Th
126 206Hg 207Tl 208Pb 209Bi 210Po 211At 212Rn 213Fr 214Ra 215Ac 216Th
127 208Tl 209Pb
210Bi
211Po 212At 213Rn 214Fr 215Ra 216Ac 217Th
128 209Tl 210Pb 211Bi 212Po 213At 214Rn 215Fr 216Ra 217Ac 218Th
129 210Tl 211Pb 212Bi 213Po 214At 215Rn 216Fr 217Ra 218Ac 219Th
130 212Pb 213Bi 214Po 215At 216Rn 217Fr 218Ra 219Ac 220Th
131 213Pb 214Bi 215Po 216At 217Rn 218Fr 219Ra 220Ac 221Th
132 214Pb 215Bi 216Po 217At 218Rn 219Fr 220Ra 221Ac 222Th
133 217Po 218At 219Rn 220Fr 221Ra 222Ac 223Th
134 218Po 219At 220Rn 221Fr 222Ra 223Ac 224Th
135 221Rn 222Fr 223Ra 224Ac 225Th
136 222Rn 223Fr 224Ra 225Ac 226Th
137 223Rn 224Fr 225Ra 226Ac 227Th
138 224Rn 225Fr 226Ra 227Ac 228Th
139 225Rn 226Fr 227Ra 228Ac 229Th
140 226Rn 227Fr 228Ra 229Ac 230Th
141 228Fr 229Ra 230Ac 231Th
142 229Fr 230Ra 231Ac 232Th
143 232Ac 233Th
144 234Th
145 235Th
146 236Th

// Properties [1][2] In physics, the proton (Greek proton = first) is a subatomic particle with an electric charge of one positive fundamental unit (1. ... Osmium (Os) Standard atomic mass: 190. ... General Name, Symbol, Number osmium, Os, 76 Chemical series transition metals Group, Period, Block 8, 6, d Appearance silvery, blue cast Atomic mass 190. ... Iridium (Ir) Standard atomic mass: 192. ... This article or section does not adequately cite its references or sources. ... General Name, Symbol, Number iridium, Ir, 77 Chemical series transition metals Group, Period, Block 9, 6, d Appearance silvery white Atomic mass 192. ... Platinum (Pt) Standard atomic mass: 195. ... General Name, Symbol, Number platinum, Pt, 78 Chemical series transition metals Group, Period, Block 10, 6, d Appearance grayish white Atomic mass 195. ... Gold (Au) Standard atomic mass: 196. ... General Name, Symbol, Number gold, Au, 79 Chemical series transition metals Group, Period, Block 11, 6, d Appearance metallic yellow Atomic mass 196. ... mercury (Hg) Standard atomic mass: 200. ... General Name, Symbol, Number mercury, Hg, 80 Chemical series transition metals Group, Period, Block 12, 6, d Appearance silvery Atomic mass 200. ... Thallium (Tl) Standard atomic mass: 204. ... General Name, Symbol, Number thallium, Tl, 81 Chemical series poor metals Group, Period, Block 13, 6, p Appearance silvery white Atomic mass 204. ... Lead (Pb) Standard atomic mass: 207. ... For PB or pb as an abbreviation, see PB. General Name, Symbol, Number lead, Pb, 82 Chemical series poor metals Group, Period, Block 14, 6, p Appearance bluish gray Atomic mass 207. ... Bismuth (Bi) Standard atomic mass: 208. ... General Name, Symbol, Number bismuth, Bi, 83 Chemical series poor metals Group, Period, Block 15, 6, p Appearance lustrous reddish white Atomic mass 208. ... Polonium (Po) Has no stable isotopes. ... General Name, Symbol, Number polonium, Po, 84 Chemical series metalloids Group, Period, Block 16, 6, p Appearance silvery Atomic mass (209) g·mol−1 Electron configuration [Xe] 4f14 5d10 6s2 6p4 Electrons per shell 2, 8, 18, 32, 18, 6 Physical properties Phase solid Density (near r. ... Astatine (At) Has no stable isotopes. ... General Name, Symbol, Number astatine, At, 85 Chemical series halogens Group, Period, Block 17, 6, p Appearance metallic (presumed) Atomic mass (210) g·mol−1 Electron configuration [Xe] 4f14 5d10 6s2 6p5 Electrons per shell 2, 8, 18, 32, 18, 7 Physical properties Phase solid Melting point 575 K (302... Radon (Rn) Has no stable isotopes. ... General Name, Symbol, Number radon, Rn, 86 Chemical series noble gases Group, Period, Block 18, 6, p Appearance colorless Atomic mass (222) g·mol−1 Electron configuration [Xe] 4f14 5d10 6s2 6p6 Electrons per shell 2, 8, 18, 32, 18, 8 Physical properties Phase gas Density (0 °C, 101. ... Francium (Fr) Has no stable isotopes. ... General Name, Symbol, Number francium, Fr, 87 Chemical series alkali metals Group, Period, Block 1, 7, s Appearance metallic Atomic mass (223) g·mol−1 Electron configuration [Rn] 7s1 Electrons per shell 2, 8, 18, 32, 18, 8, 1 Physical properties Phase solid Density (near r. ... Radium (Ra) Has no stable isotopes. ... General Name, Symbol, Number radium, Ra, 88 Chemical series alkaline earth metals Group, Period, Block 2, 7, s Appearance silvery white metallic Standard atomic weight (226) g·mol−1 Electron configuration [Rn] 7s2 Electrons per shell 2, 8, 18, 32, 18, 8, 2 Physical properties Phase solid Density (near r. ... Actinium (Ac) Has no stable isotopes. ... General Name, Symbol, Number actinium, Ac, 89 Chemical series actinides Group, Period, Block 3, 7, f Appearance silvery Atomic mass (227) g·mol−1 Electron configuration [Rn] 6d1 7s2 Electrons per shell 2, 8, 18, 32, 18, 9, 2 Physical properties Phase solid Density (near r. ... Thorium (Th) Standard atomic mass: 232. ... General Name, Symbol, Number thorium, Th, 90 Chemical series Actinides Group, Period, Block n/a, 7, f Appearance silvery white Atomic mass 232. ...

Isotopes for elements 91-105

p → 91
Pa
n ↓
125 216Pa
126
127
128
129
130
131 222Pa 92
132 223Pa U 93
133 224Pa Np 94
134 225Pa 226U Pu 95
135 226Pa 227U 228Np Am
136 227Pa 228U 229Np 96
137 228Pa 229U 230Np 232Am Cm
138 229Pa 230U 231Np 232Pu
139 230Pa 231U 232Np 233Pu 234Am 97 98 99 100
140 231Pa 232U 233Np 234Pu 235Am 236Cm Bk Cf Es Fm
141 232Pa 233U 234Np 235Pu 236Am 237Cm
142 233Pa 234U 235Np 236Pu 237Am 238Cm 239Bk 240Cf 241Es 242Fm
143 234Pa
235U
236Np
237Pu 238Am 239Cm 240Bk 241Cf 242Es 243Fm
144 235Pa 236U 237Np 238Pu 239Am 240Cm 241Bk 242Cf 243Es 244Fm 101
145 236Pa 237U 238Np 239Pu 240Am 241Cm 242Bk 243Cf 244Es 245Fm Md 102
146 237Pa 238U 239Np 240Pu 241Am 242Cm 243Bk 244Cf 245Es 246Fm No 103 104
147 238Pa 239U 240Np 241Pu
242Am
243Cm 244Bk 245Cf 246Es 247Fm 248Md Lr Rf 105
148 240U 241Np 242Pu 243Am 244Cm 245Bk 246Cf 247Es 248Fm 249Md 250No Db
149 243Pu 244Am 245Cm 246Bk 247Cf 248Es 249Fm 250Md 251No 252Lr 253Rf
150 244Pu 245Am 246Cm 247Bk 248Cf 249Es 250Fm 251Md 252No 253Lr 254Rf 255Db
151 245Pu 246Am 247Cm
248Bk
249Cf 250Es 251Fm 252Md 253No 254Lr 255Rf 256Db
152 246Pu 247Am 248Cm 249Bk 250Cf 251Es 252Fm 253Md 254No 255Lr 256Rf 257Db
153 249Cm 250Bk 251Cf 252Es 253Fm 254Md 255No 256Lr 257Rf 258Db
154 250Cm 251Bk 252Cf 253Es 254Fm 255Md 256No 257Lr 258Rf 259Db
155 251Cm 252Bk 253Cf
254Es
255Fm 256Md 257No 258Lr 259Rf 260Db
156 253Bk 254Cf 255Es 256Fm 257Md 258No 259Lr 260Rf 261Db
157 254Bk 255Cf 256Es 257Fm 258Md 259No 260Lr 261Rf 262Db
158 256Cf 257Es 258Fm 259Md 260No 261Lr 262Rf 263Db
159 259Fm 260Md 261No 262Lr 263Rf 264Db
160 262No 263Lr 264Rf 265Db

// Properties [1][2] In physics, the proton (Greek proton = first) is a subatomic particle with an electric charge of one positive fundamental unit (1. ... Protactinium (Pa) Standard atomic mass: 231. ... General Name, Symbol, Number protactinium, Pa, 91 Chemical series actinides Group, Period, Block ?, 7, f Appearance bright, silvery metallic luster Atomic mass 231. ... This article or section does not adequately cite its references or sources. ... Isotopes of uranium - Wikipedia /**/ @import /skins-1. ... General Name, Symbol, Number uranium, U, 92 Chemical series actinides Group, Period, Block n/a, 7, f Appearance silvery gray metallic; corrodes to a spalling black oxide coat in air Atomic mass 238. ... Neptunium (Np) has no stable isotopes. ... General Name, Symbol, Number neptunium, Np, 93 Chemical series actinides Group, Period, Block n/a, 7, f Appearance silvery metallic Atomic mass (237) g/mol Electron configuration [Rn] 5f4 6d1 7s2 Electrons per shell 2, 8, 18, 32, 22, 9, 2 Physical properties Phase solid Density (near r. ... Plutonium (Pu) Has no stable isotopes. ... General Name, Symbol, Number plutonium, Pu, 94 Chemical series actinides Group, Period, Block n/a, 7, f Appearance silvery white Atomic mass (244) g·mol−1 Electron configuration [Rn] 5f6 7s2 Electrons per shell 2, 8, 18, 32, 24, 8, 2 Physical properties Phase solid Density (near r. ... Americium (Am) Has no stable isotopes. ... General Name, Symbol, Number americium, Am, 95 Chemical series actinides Group, Period, Block n/a, 7, f Appearance silvery white Atomic mass (243) g/mol Electron configuration [Rn] 5f7 7s2 Electrons per shell 2, 8, 18, 32, 25, 8, 2 Physical properties Phase solid Density (near r. ... Curium (Cm) Has no stable isotopes. ... General Name, Symbol, Number curium, Cm, 96 Chemical series actinides Group, Period, Block ?, 7, f Appearance silvery Atomic mass (247) g/mol Electron configuration [Rn] 5f7 6d1 7s2 Electrons per shell 2, 8, 18, 32, 25, 9, 2 Physical properties Phase solid Density (near r. ... Berkelium (Bk) Has no stable isotopes. ... Californium (Cf) Has no stable isotopes. ... Einsteinium (Es) Has no stable isotopes. ... Fermium (Fm) Has no stable isotopes. ... General Name, Symbol, Number berkelium, Bk, 97 Chemical series actinides Group, Period, Block n/a, 7, f Appearance unknown, probably silvery white or metallic gray Atomic mass (247) g·mol−1 Electron configuration [Rn] 5f9 7s2 Electrons per shell 2, 8, 18, 32, 27, 8, 2 Physical properties Phase solid... General Name, Symbol, Number californium, Cf, 98 Chemical series actinides Group, Period, Block n/a, 7, f Appearance unknown, probably silvery white or metallic gray Atomic mass (251) g·mol−1 Electron configuration [Rn] 5f10 7s2 Electrons per shell 2, 8, 18, 32, 28, 8, 2 Physical properties Phase solid... General Name, Symbol, Number einsteinium, Es, 99 Chemical series actinides Group, Period, Block n/a, 7, f Appearance unknown, probably silvery white or metallic gray Atomic mass (252) g·mol−1 Electron configuration [Rn] 5f11 7s2 Electrons per shell 2, 8, 18, 32, 29, 8, 2 Physical properties Phase solid... General Name, Symbol, Number fermium, Fm, 100 Chemical series actinides Group, Period, Block n/a, 7, f Appearance unknown, probably silvery white or metallic gray Atomic mass (257) g·mol−1 Electron configuration [Rn] 5f12 7s2 Electrons per shell 2, 8, 18, 32, 30, 8, 2 Physical properties Phase solid... Uranium-235 is an isotope of uranium that differs from the elements other common isotope, uranium-238, by its ability to cause a rapidly expanding fission chain reaction. ... Mendelevium (Md) Has no stable isotopes. ... General Name, Symbol, Number mendelevium, Md, 101 Chemical series actinides Group, Period, Block n/a, 7, f Appearance unknown, probably silvery white or metallic gray Atomic mass (258) g·mol−1 Electron configuration [Rn] 5f13 7s2 Electrons per shell 2, 8, 18, 32, 31, 8, 2 Physical properties Phase solid... Nobelium (No) Has no stable isotopes. ... There are two objects with this name: Unterseeboot 238 Uranium-238, the most common isotope of uranium This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... General Name, Symbol, Number nobelium, No, 102 Chemical series actinides Group, Period, Block n/a, 7, f Appearance unknown, probably silvery white or metallic gray Atomic mass (259) g/mol Electron configuration [Rn] 5f14 7s2 Electrons per shell 2, 8, 18, 32, 32, 8, 2 Physical properties Phase solid Melting... Lawrencium (Lr) has no stable isotopes. ... Rutherfordium (Rf) has no stable isotopes. ... General Name, Symbol, Number lawrencium, Lr, 103 Chemical series actinides Group, Period, Block n/a, 7, d Appearance unknown, probably silvery white or metallic gray Atomic mass (264) g·mol−1 Electron configuration probably [Rn] 5f14 7s2 7p1 Electrons per shell 2, 8, 18, 32, 32, 8, 3 Physical properties... General Name, Symbol, Number rutherfordium, Rf, 104 Chemical series transition metals Group, Period, Block 4, 7, d Appearance unknown, probably silvery white or metallic gray Atomic mass (261) g/mol Electron configuration probably [Rn] 5f14 6d2 7s2 Electrons per shell 2, 8, 18, 32, 32, 10, 2 Phase presumably a... Dubnium (Db) has no stable isotopes. ... General Name, Symbol, Number dubnium, Db, 105 Chemical series transition metals Group, Period, Block 5, 7, d Appearance unknown, probably silvery white or metallic gray Atomic mass (262) g/mol Electron configuration perhaps [Rn] 5f14 6d3 7s2 (guess based on tantalum) Electrons per shell 2, 8, 18, 32, 32, 11...

Isotopes for elements 106-111

p → 106
Sg 107
n ↓ Bh
152 258Sg 108
153 259Sg 260Bh Hs 109
154 260Sg 261Bh Mt 110
155 261Sg 262Bh 263Hs Ds 111
156 262Sg 263Bh 264Hs 265Mt Rg
157 263Sg 264Bh 265Hs 266Mt 267Ds
158 264Sg 265Bh 266Hs 267Mt 268Ds
159 265Sg 266Bh 267Hs 268Mt 269Ds
160 266Sg 267Bh 268Hs 269Mt 270Ds
161 269Hs 270Mt 271Ds 272Rg
162 271Mt 272Ds

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Isotope (886 words)
Isotopes of a chemical element are atoms whose nuclei have the same atomic number, Z, but different atomic weights, A.
In scientific nomenclature[?], isotopes are specified by the name of the particular element followed by a hyphen and the number of nucleons (protons and neutrons) in the atomic nucleus (e.g., iron-57, uranium-238, helium-3).
The atomic mass for an element in the periodic table is the average of the natural abundance of the isotopes of that element.
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Isotopes are forms of an element whose nuclei have the same atomic number–-the number of protons in the isotopes of carbon nucleus--but different atomic masses because they contain different numbers of neutrons.
In scientific nomenclature, isotopes (nuclides) what practical applications do isotopes have are specified by the name of the particular element by a hyphen and the number of nucleons (protons and neutrons) in the atomic nucleus (e.g., helium-3, carbon-12, carbon-14, stable isotopes iron-57, radioactive isotope uranium-238).
The vibrational modes radioactive isotopes in medicine of a molecule are determined by its shape and by the masses of its constituent model of isotope neon 21 atoms.
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