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Germanium (Ge)

Germanium (Ge) is element 32 of the periodic table, a metalloid in period 4 and group 14. Its standard atomic weight is 72.63, so one mole of germanium atoms has a mass of 72.63 g. At room temperature it is a solid; it melts at 938.25 °C and boils at 2832.85 °C.

32 Ge Germanium 72.63

Period 4, group 14 · Metalloid

← Ga Gallium As Arsenic →

Atomic number	32
Symbol	Ge
Standard atomic weight	72.63
Molar mass	72.63 g/mol
Category	Metalloid
Group	14
Period	4
Block	p-block
Electron configuration	[Ar] 4s² 3d¹⁰ 4p²
Oxidation states	+4, +2
Electronegativity (Pauling)	2.01
Atomic radius (van der Waals)	211 pm
First ionisation energy	7.9 eV (762.2 kJ/mol)
Electron affinity	1.35 eV
State at room temperature	Solid
Melting point	1211.4 K (938.25 °C)
Boiling point	3106 K (2832.85 °C)
Density	5.323 g/cm³
Discovered	1886

Group 14

C · Carbon Si · Silicon Sn · Tin Pb · Lead Fl · Flerovium

Calculate with Germanium

Molar mass of Ge Balance an equation Grams, moles and particles Whole periodic table

Atomic weight: IUPAC CIAAW standard atomic weight. Other properties: PubChem (U.S. National Library of Medicine, public domain). Values such as melting point and radius depend on how they were measured; check a data book for precise work.