Germanium

Metalloid · 72.63 u · group 14, period 4

Germanium · Ge

Atomic number32

SymbolGe

CategoryMetalloid

Standard stateSolid

Group · Period · Block14 · 4 · p

Electron configuration[Ar]4s2 3d10 4p2

Atomic mass72.63 u

Atomic radius211 pm

Protons / Neutrons / Electrons32 / 41 / 32

Shells (e⁻ per shell)2, 8, 18, 4

Electronegativity (Pauling)2.01

Ionization energy7.9 eV

Electron affinity1.35 eV

Oxidation states+4, +2

Melting point1.21e+3 K · 938.3 °C

Boiling point3.11e+3 K · 2.83e+3 °C

Density5.323 g/cm³

Year discovered1886

CPK color

#668F8F

State at room temp (25 °C)

solid

Position

1 in library