Cadmium

Cadmium is a white metallic element. It is readily accessible as it occurs in concentrated ores and is easily extracted by heating the oxide with carbon and distilling the metal. Cadmium has been used in applications as diverse as plating, the manufacture of batteries and as a yellow pigment for paint. However, its high toxicity means that its use is now becoming increasingly restricted.


Symbol
Cd

Discovered
1817 by Friedrich Stromeyer at Gottingen, Germany.

Abundance
0.11 ppm of Earth's crust.

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Atomic number 48 Clip
Atomic / Molecular Weight 112.41 gmol-1Clip
Density 8647 kgm-3Clip
Lattice constant 298 fmClip
Melting Point 594.268 KClip
Boiling Point 1043 KClip
Linear expansivity 0.0000308 K-1Clip
Specific heat capacity 230 Jkg-1K-1Clip
Latent heat of fusion 46000 Jkg-1Clip
Thermal conductivity 97 Wm-1K-1Clip
Acoustic wave velocity (longitudinal bulk waves) 2780 ms-1Clip
Acoustic wave velocity (Irrotational waves) 2400 ms-1Clip
Bulk Modulus of Rigidity 41600000000 Nm-2Clip
Electromotive Series 0.4 VClip
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See also: Cadmium Oxide, Cadmium Sulphate, Cadmium Sulphide, Cadmium Telluride, Greenockite, Periodic Table.

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Subjects: Chemistry


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