Germanium

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Discipline:
Science Subject:
Chemistry Grade:
10

Germanium

Discovered by:Clemens A. Winkler

Atomic # : 32Group 14MetalloidPeriod # : 4# of Protons: 32# of Electrons: 32# of neutrons:42

Brittle, Silvery-White, Semi-Metallic

Year Discovered: 1886Discovered in GermanyDerived for "Germania" meaning Germany; in honor of his homeland

# of Valence Electrons: 4

Physical and Chemical Properties:expands as it solidifies from its molten state,semi-conductor

Melting point: 938°CBoiling Point: 2833°CElectronegativity: 2.01 (Pauling Scale)Oxidation States: 4,3,2,1,0,-1,-2,-3,-4 (amphoteric oxide)

Phase at room temp.: SolidDensity at room temp.: 5.323 g·cm−3

Noble gas Configuration: Ar 3d10 4s2 4p2Full Electron Configuration:1s2 2s2 2p6 3s2 3p6 4s2 4d10 4p2

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