Bohrium

Transition metal · 270.133 u · group 7, period 7

Bohrium · Bh

Atomic number107

SymbolBh

CategoryTransition metal

Standard stateSolid

Group · Period · Block7 · 7 · d

Electron configuration[Rn]7s2 5f14 6d5

Atomic mass270.133 u

Atomic radius—

Protons / Neutrons / Electrons107 / 163 / 107

Shells (e⁻ per shell)2, 8, 18, 32, 32, 13, 2

Electronegativity (Pauling)—

Ionization energy—

Electron affinity—

Oxidation states7, 5, 4, 3

Melting point—

Boiling point—

Density—

Year discovered1976

CPK color

#E00038

State at room temp (25 °C)

unknown

Position