Seaborgium

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Seaborgium,  106Sg
General properties
Name, seembol seaborgium, Sg
Pronunciation Listeni/sˈbɔrɡiəm/
see-BOR-gee-əm
Appearance unknown
Seaborgium in the periodic cairt
Hydrogen (diatomic nonmetal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline yird metal)
Boron (metalloid)
Carbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oxygen (diatomic nonmetal)
Fluorine (diatomic nonmetal)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline yird metal)
Aluminium (post-transeetion metal)
Silicon (metalloid)
Phosphorus (polyatomic nonmetal)
Sulfur (polyatomic nonmetal)
Chlorine (diatomic nonmetal)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline yird metal)
Scandium (transeetion metal)
Titanium (transeetion metal)
Vanadium (transeetion metal)
Chromium (transeetion metal)
Manganese (transeetion metal)
Iron (transeetion metal)
Cobalt (transeetion metal)
Nickel (transeetion metal)
Copper (transeetion metal)
Zinc (transeetion metal)
Gallium (post-transeetion metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (polyatomic nonmetal)
Bromine (diatomic nonmetal)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline yird metal)
Yttrium (transeetion metal)
Zirconium (transeetion metal)
Niobium (transeetion metal)
Molybdenum (transeetion metal)
Technetium (transeetion metal)
Ruthenium (transeetion metal)
Rhodium (transeetion metal)
Palladium (transeetion metal)
Silver (transeetion metal)
Cadmium (transeetion metal)
Indium (post-transeetion metal)
Tin (post-transeetion metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (diatomic nonmetal)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline yird metal)
Lanthanum (lanthanide)
Cerium (lanthanide)
Praseodymium (lanthanide)
Neodymium (lanthanide)
Promethium (lanthanide)
Samarium (lanthanide)
Europium (lanthanide)
Gadolinium (lanthanide)
Terbium (lanthanide)
Dysprosium (lanthanide)
Holmium (lanthanide)
Erbium (lanthanide)
Thulium (lanthanide)
Ytterbium (lanthanide)
Lutetium (lanthanide)
Hafnium (transeetion metal)
Tantalum (transeetion metal)
Tungsten (transeetion metal)
Rhenium (transeetion metal)
Osmium (transeetion metal)
Iridium (transeetion metal)
Platinum (transeetion metal)
Gold (transeetion metal)
Mercury (transeetion metal)
Thallium (post-transeetion metal)
Lead (post-transeetion metal)
Bismuth (post-transeetion metal)
Polonium (post-transeetion metal)
Astatine (metalloid)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline yird metal)
Actinium (actinide)
Thorium (actinide)
Protactinium (actinide)
Uranium (actinide)
Neptunium (actinide)
Plutonium (actinide)
Americium (actinide)
Curium (actinide)
Berkelium (actinide)
Californium (actinide)
Einsteinium (actinide)
Fermium (actinide)
Mendelevium (actinide)
Nobelium (actinide)
Lawrencium (actinide)
Rutherfordium (transeetion metal)
Dubnium (transeetion metal)
Seaborgium (transeetion metal)
Bohrium (transeetion metal)
Hassium (transeetion metal)
Meitnerium (unkent chemical properties)
Darmstadtium (unkent chemical properties)
Roentgenium (unkent chemical properties)
Copernicium (transeetion metal)
Ununtrium (unkent chemical properties)
Flerovium (post-transeetion metal)
Ununpentium (unkent chemical properties)
Livermorium (unkent chemical properties)
Ununseptium (unkent chemical properties)
Ununoctium (unkent chemical properties)
W

Sg

(Upo)
dubniumseaborgiumbohrium
Atomic nummer 106
Staundart atomic wicht (Ar) [269]
Element category   transition metal
Group, block group 6, d-block
Period period 7
Electron configuration [Rn] 5f14 6d4 7s2
(predicted)[1]
per shell
2, 8, 18, 32, 32, 12, 2
(predictit)
Pheesical properties
Phase solid (predictit)[2]
Density near r.t. 35.0 (predictit)[1][3] g/cm3
Atomic properties
Oxidation states 6, 5, 4, 3 ​anly boldit oxidation states are kent experimentally
energies
(mair)
Atomic radius empirical: 132 (predictit)[1] pm
Covalent radius 143 (estimatit)[4] pm
Miscellanea
Crystal structur body-centered cubic (bcc) (predictit)[2]
Body-centered cubic crystal structure for seaborgium
CAS Registry Nummer 54038-81-2
History
Discovery Lawrence Berkeley National Laboratory (1974)
Maist stable isotopes
Main article: Isotopes o seaborgium
iso NA hauf-life DM DE (MeV) DP
271Sg syn 1.9 min 67% α 8.54 267Rf
33% SF
269Sg syn 2.1 min α 8.56 265Rf
267Sg syn 1.4 min 17% α 8.20 263Rf
83% SF
265mSg syn 16.2 s α 8.70 261mRf
265Sg syn 8.9 s α 8.90, 8.84, 8.76 261Rf
only isotopes with half-lives over 5 seconds are included here
· references

Seaborgium is a synthetic element wi the seembol Sg an atomic nummer 106, whose maist stable isotope 271Sg haes a hauf-life o 1.9 minutes. A mair recently discovered isotope 269Sg haes a potentially slichtly langer hauf-life (ca. 2.1 min) based on the observation o a single decay. Chemistry experiments wi seaborgium hae firmly placed it in group 6 as a hivier homologue tae tungsten.

References[eedit | eedit soorce]

  1. Cite error: Invalid <ref> tag; no text was provided for refs named Haire
  2. 2.0 2.1 Östlin, A.; Vitos, L. (2011). "First-principles calculation of the structural stability of 6d transition metals". Physical Review B 84 (11). Bibcode:2011PhRvB..84k3104O. doi:10.1103/PhysRevB.84.113104. 
  3. Fricke, Burkhard (1975). "Superheavy elements: a prediction of their chemical and physical properties". Recent Impact of Physics on Inorganic Chemistry 21: 89–144. doi:10.1007/BFb0116498. Retrieved 4 October 2013. 
  4. Chemical Data. Seaborgium - Sg, Royal Chemical Society