germanium

Name germanium
Symbol Ge
Atomic Weight 72.64
Atomic Number 32
CAS ID 7440-56-4
Group Number 14
Group Name (none)
Period Number 4
Origin of Name Latin, Germania = "Germany."
Year Discovered 1886
Discovery Credits C. A. Winkler at Freiberg, Germany.
Class Semi-Metallic
Color Grayish White
Standard State Solid at 77 F & 298 K
Description Ultra pure it is a silvery white brittle metalloid element. Stable in air and water, unaffected by acids, except nitric, and alkalis. Used in semiconductors, alloys, and special glasses for infrared devices.

Diagnostic tests: 
There are no simple chemical tests for germanium. Atomic Absorption Spectroscopy is used for quantitative analysis and Energy Depressive Analysis of X-rays (EDAX) is used for qualitative analysis.

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