FACTOID # 8: Bookworms: Vermont has the highest number of high school teachers per capita and third highest number of librarians per capita.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
   
 
WHAT'S NEW
RELATED ARTICLES
People who viewed "Seaborgium" also viewed:
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Seaborgium
106 dubniumseaborgiumbohrium
W

Sg

(Uph)
General
Name, Symbol, Number seaborgium, Sg, 106
Chemical series transition metals
Group, Period, Block 6, 7, d
Appearance unknown, probably silvery
white or metallic gray
Atomic mass (266) g/mol
Electron configuration perhaps [Rn] 5f14 6d4 7s2
(guess based on tungsten)
Electrons per shell 2, 8, 18, 32, 32, 12, 2
Phase presumably a solid
CAS registry number 54038-81-2
References

Seaborgium (Eka-Tungsten) is a chemical element in the periodic table that has the symbol Sg and atomic number 106. It was also known as "unnilhexium" (Unh), and at one time "rutherfordium" was suggested. Seaborgium is a synthetic element whose most stable isotope 271Sg has a half-life of 2.4 minutes. Its chemistry resembles that of tungsten. 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... General Name, Symbol, Number bohrium, Bh, 107 Chemical series transition metals Group, Period, Block 7, 7, d Appearance unknown, probably silvery white or metallic gray Atomic mass (264) g/mol Electron configuration perhaps [Rn] 5f14 6d5 7s2 (guess based on rhenium) Electrons per shell 2, 8, 18, 32, 32, 13... General Name, Symbol, Number tungsten, W, 74 Chemical series transition metals Group, Period, Block 6, 6, d Appearance grayish white, lustrous Atomic mass 183. ... Image File history File links Download high resolution version (900x270, 23 KB) source: image produite pour Wikipédia par leurs auteurs auteurs: Daniel Mayer (w:en:Maveric149) and/or Arnaud Gaillard (Greatpatton) licence: File links The following pages link to this file: Seaborgium User:Femto/elements e10 ... For information about the period table of elements, see Periodic table. ... This is a list of chemical elements, sorted by name and color coded according to type of element. ... Categories: Chemical elements ... sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex... In chemistry, the term transition metal (sometimes also called a transition element) has two possible meanings: It commonly refers to any element in the d-block of the periodic table, including zinc and scandium. ... A periodic table group is a vertical column in the periodic table of the chemical elements. ... In the periodic table of the elements, a period is a row of the table. ... A block of the periodic table of elements is a set of adjacent groups. ... The group 6 in the periodic table consists of the elements chromium (24) molybdenum (42) tungsten (74) seaborgium (106) Group 6 is the new IUPAC name for this group, the old style name was group VIA in the old European system or group VIB in the old US system. ... A period 7 element is one of the chemical elements in the seventh row (or period) of the periodic table of the elements. ... D Block is a rap group based in Yonkers, New York. ... ... The atomic mass of a chemical element (also known as the relative atomic mass or average atomic mass or atomic weight) is the average atomic mass of all the chemical elements isotopes as found in a particular environment, weighted by isotopic abundance. ... To help compare different orders of magnitude we list here masses between 60. ... It has been suggested that Energy level be merged into this article or section. ... General Name, Symbol, Number radon, Rn, 86 Chemical series noble gases Group, Period, Block 18, 6, p Appearance colorless Atomic mass (222) g/mol Electron configuration [Xe] 4f14 5d10 6s2 6p6 Electrons per shell 2, 8, 18, 32, 18, 8 Physical properties Phase gas Melting point 202 K (-71 °C... General Name, Symbol, Number tungsten, W, 74 Chemical series transition metals Group, Period, Block 6, 6, d Appearance grayish white, lustrous Atomic mass 183. ... Properties The electron is a fundamental subatomic particle that carries a negative electric charge. ... A quantum mechanical system can only be in certain states, so that only certain energy levels are possible. ... In the physical sciences, a phase is a set of states of a macroscopic physical system that have relatively uniform chemical composition and physical properties (i. ... In jewelry, a solid gold piece is the alternative to gold-filled or gold-plated jewelry. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ... Recommended values for many properties of the elements, together with various references, are collected on these data pages. ... A chemical element, often called simply element, is a chemical substance that cannot be divided or changed into other chemical substances by any ordinary chemical technique. ... The periodic table of the chemical elements is a tabular method of displaying the chemical elements, first devised in 1869 by the Russian chemist Dmitri Mendeleev. ... The atomic number (Z) is a term used in chemistry and physics to represent the number of protons found in the nucleus of an atom. ... The chemical elements labelled as synthetic are unstable, with a half-life so short (ranging from a fraction of millisecond to a few million years) relative to the age of the Earth that any atoms of that element that may have been present when the Earth formed have long since... Isotopes are forms of an element whose nuclei have the same atomic number - the number of protons in the nucleus - but different mass numbers because they contain different numbers of neutrons. ... 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 minute is a unit of time equal to 1/60th of an hour and to 60 seconds. ...

Contents


History

Element 106 was discovered almost simultaneously by two different laboratories. In June 1974, a Soviet team led by G. N. Flerov at the Joint Institute for Nuclear Research at Dubna reported producing an isotope with mass number 259 and a half-life of 0.48 s, and in September 1974, an American research team led by Albert Ghiorso at the Lawrence Radiation Laboratory at the University of California, Berkeley reported creating an isotope with mass number 263 and a half-life of 1.0 s. 1974 (MCMLXXIV) was a common year starting on Tuesday (the link is to a full 1974 calendar). ... State motto (Russian): Пролетарии всех стран, соединяйтесь! (Transliterated: Proletarii vsekh stran, soedinyaytes!) (Translated: Workers of the world, unite!) Capital Moscow Official language None; Russian (de facto) Government Federation of Socialist republics Area  - Total  - % water 1st before collapse 22,402,200 km² Approx. ... G. Flerov Georgii N. Flerov (also, Georgy Nikolaevich Flerov) (March 2, 1913-November 19, 1990) was a prominent Soviet nuclear physicist. ... The Joint Institute for Nuclear Research, JINR (Объединённый институт ядерных исследований, ОИЯИ in Russian) in Dubna, Moscow Oblast (120 km north of Moscow), Russia is an international research centre for nuclear sciences, involving around 1000 scientists from eighteen states (Armenia, Azerbaijan, Belarus, Bulgaria, Cuba, Czech Republic, Georgia, Kazakhstan, DPR Korea, Moldova, Mongolia, Poland,Romania, Russia... Dubna is a small city located in central Russia, in the Taldomsky district of Moscow Oblast, approximately 125 km north of Moscow, on the banks of the Volga river. ... Look up second in Wiktionary, the free dictionary. ... 1974 (MCMLXXIV) was a common year starting on Tuesday (the link is to a full 1974 calendar). ... Albert Ghiorso (b. ... The Berkeley Lab is perched on a hill overlooking the Berkeley central campus and San Francisco Bay. ... University of California, Berkeley The University of California, Berkeley (also known as California, Cal, UCB, UC Berkeley, The University of California, or simply Berkeley) is a public, coeducational university situated east of the San Francisco Bay in Berkeley, California, overlooking the Golden Gate. ...


Because their work was independently confirmed first, the Americans suggested the name seaborgium to honor the American chemist Glenn T. Seaborg. This name was extremely controversial because Seaborg was still alive. An international committee decided in 1992 that the Berkeley and Dubna laboratories should share credit for the discovery. Glenn T. Seaborg Glenn Theodore Seaborg (April 19, 1912 – February 25, 1999) was an American chemist, who was prominent in the discovery and isolation of many transuranic elements (including plutonium, during the Manhattan Project), for which he won the Nobel Prize in Chemistry in 1951. ... 1992 (MCMXCII) was a leap year starting on Wednesday. ...


An element naming controversy erupted and as a result IUPAC adopted unnilhexium (symbol Unh) as a temporary, systematic element name. In 1994 a committee of IUPAC recommended that element 106 be named rutherfordium and adopted a rule that no element can be named after a living person. This ruling was fiercely objected to by the American Chemical Society. Critics pointed out that a precedent had been set in the naming of einsteinium during Albert Einstein's life. In 1997, as part of a compromise involving elements 104 to 108, the name seaborgium for element 106 was recognized internationally. The names for the chemical elements 104 to 108 have been the subject of a major controversy starting in the 1960s which was only finally resolved in 1997. ... The International Union of Pure and Applied Chemistry (IUPAC) is an international non-governmental organization devoted to the advancement of chemistry. ... In chemistry, heavy transuranic elements receive a permanent name and symbol only after their discovery has been confirmed. ... 1994 (MCMXCIV) was a common year starting on Saturday of the Gregorian calendar, and was designated the International year of the Family. ... The American Chemical Society (ACS) is a learned society (professional association) based in the United States that supports scientific inquiry in the field of chemistry. ... General Name, Symbol, Number einsteinium, Es, 99 Chemical series actinides Group, Period, Block ?, 7, f Appearance unknown, probably silvery white or metallic gray Atomic mass (252) g/mol Electron configuration [Rn] 5f11 7s2 Electrons per shell 2, 8, 18, 32, 29, 8, 2 Physical properties Phase solid Density (near r. ... Albert Einstein photographed by Oren J. Turner in 1947. ... 1997 (MCMXCVII in Roman) is a common year starting on Wednesday of the Gregorian calendar. ...


Isotopes

There are 11 known isotopes of Seaborgium, the longest-lived isotope is 269Sg which decays through alpha decay and spontaneous fission. It has a half-life of 22 s. The shortest-lived isotope is 258Sg which also decays through alpha decay and spontaneous fission. It has a half-life of 2.9 ms. Alpha decay is a form of radioactive decay in which an atomic nucleus ejects an alpha particle and transforms into a nucleus with mass number 4 less and atomic number 2 less. ... Spontaneous fission (SF) is a form of radioactive decay characteristic of very heavy isotopes, and is theoretically possible for any atomic nucleus whose mass is greater than or equal to 100 amu (elements near ruthenium). ... A millisecond is an SI-derived unit of time, equal to one thousandth of a second. ...


References

External links

Wikimedia Commons has media related to:
Seaborgium

  Results from FactBites:
 
Seaborgium (719 words)
The name seaborgium, with its chemical symbol of "Sg," was announced on Sunday, March 13, at the 207th national meeting of the American Chemical Society in San Diego.
Seaborgium is the newest name to be added to the family of "transuranium" elements--those beyond uranium on the periodic table.
The name seaborgium was chosen to honor the man who shared the 1951 Nobel Prize in chemistry with former LBL Director Edwin McMillan for "their discoveries in the chemistry of the transuranium elements."
  More results at FactBites »

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m