Germanium is a chemical element with symbol Ge and atomic number 32. It is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Pure germanium is a semiconductor with an appearance similar to elemental silicon.

Atomic Weight: 72.63
Density:       5.323 g/cm3
Melting Point: 938.3 °C
Boiling Point: 2820 °C