Ge

Germanium

Atomic Number 32 · Metal piece/lens

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

Atomic Mass

72.63 u

Category

Metalloid

Phase (STP)

Solid

Density

5.323 g/cm³

Melting Point

938.25 °C

Boiling Point

2833 °C

Electronegativity

2.01 (Pauling)

Atomic Radius

125 pm

Electron Configuration

[Ar] 3d10 4s2 4p2

Discovered

1886 — Clemens Winkler

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Sample form: Metal piece/lens

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