Germanium | SSHADE

Solid phase

Official name: Germanium

Name and identifiers

Secondary names: α-germanium
CAS number: 7440-56-4

Family: metallic solid
Class: pseudometal (semi-conductor)
Compound type: elemental solid

Chemical composition

Formula: $Ge$
Chemical formula: Ge
Elemental formula: Ge
Isotope mixture type: terrestrial abundance

2.0

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$Ge$	Germanium	element	1	1.0	1	constituent element	main

Class: pseudometals (14)
Type: homovalent monolayer pseudometals (14.01)

Crystallography

Phase name: α-germanium
Phase type: crystalline
Crystal system: isometric (cubic)
Crystal class: hexoctahedral
Crystal class symbol: m-3m (Oh)
Crystal spacegroup: Fd-3m

Physical properties

Molar mass: 72.630 $g/mol$
Density: 5.327 $g/cm^3$

Thermodynamical properties

State NTP

solid

Phase transitions

Phase transition type	Other phases	Temperature - Pressure
solid-liquid	liquid Ge	937°C (1211 K)

Optical properties

Refringence type: isotropic
Pure color: gray

Links and Publications

Links