Bohrium

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Bohrium (ⁱ /ˈbɔəriəm/) is a chemical element with the symbol Bh and atomic number 107 and is the heaviest member of group 7 (VIIB).

It is a synthetic element whose most stable known isotope, ²⁷⁰Bh, has a half-life of 61 seconds. Chemical experiments have confirmed bohrium's predicted position as a heavier homologue to rhenium with the formation of a stable +7 oxidation state.^[1]

• 1 History
  • 1.1 Official discovery
  • 1.2 Proposed names
• 2 Isotopes and nuclear properties
  • 2.1 Nucleosynthesis
    • 2.1.1 Cold fusion
      • 2.1.1.1 ²⁰⁹Bi(⁵⁴Cr,xn)^263-xBh (x=1,2)
      • 2.1.1.2 ²⁰⁹Bi(⁵³Cr,xn)^262-xBh
      • 2.1.1.3 ²⁰⁹Bi(⁵²Cr,xn)^261-xBh (x=1)
      • 2.1.1.4 ²⁰⁸Pb(⁵⁵Mn,xn)^263-xBh (x=1)
    • 2.1.2 Hot fusion
      • 2.1.2.1 ²³⁸Am(³¹P,xn)^269-xBh (x=5?)
      • 2.1.2.2 ²⁴³Am(²⁶Mg,xn)^269-xBh (x=3,4,5)
      • 2.1.2.3 ²⁴⁸Cm(²³Na,xn)^271-xBh (x=4,5)
      • 2.1.2.4 ²⁴⁹Bk(²²Ne,xn)^271-xBh (x=4)
      • 2.1.2.5 ²⁵⁴Es(¹⁶O,xn)^270-xBh
    • 2.1.3 As decay products
    • 2.1.4 List of discovered isotopes
  • 2.2 Nuclear isomerism
    • 2.2.1 ²⁶²Bh
  • 2.3 Chemical yields of isotopes
    • 2.3.1 Cold Fusion
    • 2.3.2 Hot Fusion
• 3 Chemical properties
  • 3.1 Extrapolated chemical properties
    • 3.1.1 Oxidation states
    • 3.1.2 Chemistry
  • 3.2 Experimental chemistry
    • 3.2.1 Gas phase chemistry
    • 3.2.2 Summary of compounds
• 4 See also
• 5 References
• 6 External links

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