ಬೊಹ್ರಿಯಮ್

ವಿಕಿಪೀಡಿಯ ಇಂದ
ಇಲ್ಲಿಗೆ ಹೋಗು: ಸಂಚರಣೆ, ಹುಡುಕು
Bohrium,  107Bh
General properties
Name, symbol bohrium, Bh
Pronunciation Listeni/ˈbɔəriəm/
Bohrium in the periodic table
Hydrogen (diatomic nonmetal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline earth metal)
Boron (metalloid)
Carbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oxygen (diatomic nonmetal)
Fluorine (diatomic nonmetal)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silicon (metalloid)
Phosphorus (polyatomic nonmetal)
Sulfur (polyatomic nonmetal)
Chlorine (diatomic nonmetal)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline earth metal)
Scandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Chromium (transition metal)
Manganese (transition metal)
Iron (transition metal)
Cobalt (transition metal)
Nickel (transition metal)
Copper (transition metal)
Zinc (transition metal)
Gallium (post-transition metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (polyatomic nonmetal)
Bromine (diatomic nonmetal)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline earth metal)
Yttrium (transition metal)
Zirconium (transition metal)
Niobium (transition metal)
Molybdenum (transition metal)
Technetium (transition metal)
Ruthenium (transition metal)
Rhodium (transition metal)
Palladium (transition metal)
Silver (transition metal)
Cadmium (transition metal)
Indium (post-transition metal)
Tin (post-transition metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (diatomic nonmetal)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline earth 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 (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Rhenium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Gold (transition metal)
Mercury (transition metal)
Thallium (post-transition metal)
Lead (post-transition metal)
Bismuth (post-transition metal)
Polonium (post-transition metal)
Astatine (metalloid)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline earth 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 (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hassium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (transition metal)
Ununtrium (unknown chemical properties)
Flerovium (post-transition metal)
Ununpentium (unknown chemical properties)
Livermorium (unknown chemical properties)
Ununseptium (unknown chemical properties)
Ununoctium (unknown chemical properties)
Re

Bh

(Upe)
seaborgiumbohriumhassium
Atomic number 107
Standard atomic weight [270]
Element category transition metal
Group, block group 7, d-block
Period period 7
Electron configuration [Rn] 5f14 6d5 7s2 (calculated)[೧][೨]
per shell 2, 8, 18, 32, 32, 13, 2 (predicted)
Physical properties
Phase solid (predicted)[೩]
Density (near r.t.) 37.1 g·cm−3 (predicted)[೨][೪] (at 0 °C, 101.325 kPa)
Atomic properties
Oxidation states 7, (5), (4), (3)[೨][೪] ​(parenthesized oxidation states are predictions)
Ionization energies 1st: 742.9 kJ·mol−1
2nd: 1688.5 kJ·mol−1
3rd: 2566.5 kJ·mol−1
(more) (all estimated)[೨]
Atomic radius empirical: 128 pm (predicted)[೨]
Covalent radius 141 pm (estimated)[೫]
Miscellanea
Crystal structure ಟೆಂಪ್ಲೇಟು:Infobox element/crystal structure
(predicted)[೩]
CAS number 54037-14-8
History
Naming after Niels Bohr
Discovery Gesellschaft für Schwerionenforschung (1981)
Most stable isotopes
Main article: Isotopes of bohrium
iso NA half-life DM DE (MeV) DP
274Bh syn ~54 s[೬] α 8.8 270Db
272Bh syn 9.8 s α 9.02 268Db
271Bh syn 1.2 s[೭] α 9.35[೭] 267Db
270Bh syn 61 s α 8.93 266Db
267Bh syn 17 s α 8.83 263Db
· references
The element 107 was originally proposed to be named after Niels Bohr, a Danish nuclear physicist, with the name nielsbohrium (Ns). This name was later changed by IUPAC to bohrium (Bh).

ಬೊಹ್ರಿಯಮ್ ಒಂದು ಮೂಲವಸ್ತು. ಇದು ಅತ್ಯಂತ ಅಸ್ಥಿರವಾದ ಲೋಹ.ಇದರ ಅತ್ಯಂತ ಸ್ಥಿರ ಸಮಸ್ಥಾನಿ ಕೇವಲ ೬೧ ಸೆಕೆಂಡ್ ಗಳ ಅರ್ಧಾಯುಷ್ಯವನ್ನು ಹೊಂದಿದೆ.ಆದುದರಿಂದ ಇದರ ಅಸ್ಥಿತ್ವ ಪ್ರಯೋಗಶಾಲೆಗಷ್ಟೇ ಸೀಮಿತವಾಗಿದೆ.ಇದರ ಹೆಸರನ್ನು ಖ್ಯಾತ ವಿಜ್ಞಾನಿ ನೀಲ್ಸ್ ಬೊಹ್ರ್ ರವರ ಗೌರವಾರ್ಥ ಇಡಲಾಗಿದೆ.

ಬಾಹ್ಯ ಸಂಪರ್ಕಗಳು[ಬದಲಾಯಿಸಿ]

ಉಲ್ಲೇಖಗಳು[ಬದಲಾಯಿಸಿ]

  1. Johnson, E.; Fricke, B.; Jacob, T.; Dong, C. Z.; Fritzsche, S.; Pershina, V. (2002). "Ionization potentials and radii of neutral and ionized species of elements 107 (bohrium) and 108 (hassium) from extended multiconfiguration Dirac–Fock calculations". The Journal of Chemical Physics 116: 1862. Bibcode:2002JChPh.116.1862J. doi:10.1063/1.1430256. 
  2. ೨.೦ ೨.೧ ೨.೨ ೨.೩ ೨.೪ Haire, Richard G. (2006). "Transactinides and the future elements". In Morss; Edelstein, Norman M.; Fuger, Jean. The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Dordrecht, The Netherlands: Springer Science+Business Media. ISBN 1-4020-3555-1. 
  3. ೩.೦ ೩.೧ 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. 
  4. ೪.೦ ೪.೧ 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. 
  5. Chemical Data. Bohrium - Bh, Royal Chemical Society
  6. doi:10.1103/PhysRevLett.104.142502
    This citation will be automatically completed in the next few minutes. You can jump the queue or expand by hand (gives life-time of 1.3 min based on a single event; conversion to half-life is done by multiplying with ln(2).)
  7. ೭.೦ ೭.೧ FUSHE (2012). "Synthesis of SH-nuclei" (PDF). Retrieved September 2012.