Germanium (Ge) — Element 32

32 Ge 72.63

Germanium

Element 32 · 72.63 u · p-block

metalloid

A lustrous metalloid used in fiber optics, infrared optics, and early transistors. Predicted by Mendeleev as eka-silicon.

Phase (STP)

Solid

Melting Point

938.25 °C

Boiling Point

2833 °C

Density

5.323 g/cm³

Electronegativity

2.01

Atomic Radius

125 pm

Ionization Energy

762 kJ/mol

Electron Affinity

119 kJ/mol

Discovered

1886 · Clemens Winkler

Electron Configuration

[Ar] 3d10 4s2 4p2