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-1	Clip
Density	8647	kgm-3	Clip
Lattice constant	298	fm	Clip
Melting Point	594.268	K	Clip
Boiling Point	1043	K	Clip
Linear expansivity	0.0000308	K-1	Clip
Specific heat capacity	230	Jkg-1K-1	Clip
Latent heat of fusion	46000	Jkg-1	Clip
Thermal conductivity	97	Wm-1K-1	Clip
Acoustic wave velocity (longitudinal bulk waves)	2780	ms-1	Clip
Acoustic wave velocity (Irrotational waves)	2400	ms-1	Clip
Bulk Modulus of Rigidity	41600000000	Nm-2	Clip
Electromotive Series	0.4	V	Clip

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See also: Cadmium Oxide, Cadmium Sulphate, Cadmium Sulphide, Greenockite, Periodic Table.