Cadmium | ENvironmental inFOrmation

Source of the photo

http://www.tsumeb.com/

Author of the description

Gruiz Katalin

Atomic number	48
Atomic mass	112.4 g.mol^-1
Electronegativity	1.7
Density	8.7 g.cm^-3 at 20°C
Melting point	321 °C
Boiling point	767 °C
Vanderwaals radius	0.154 nm
Ionic radius	0.097 nm (+2)
Isotopes	15
Electronic shell	[ Kr ] 4d¹⁰ 5s²
Energy of first ionisation	866 kJ.mol^-1
Energy of second ionisation	1622 kJ.mol^-1
Standard potential	-0.402 V
Discovered	Fredrich Stromeyer in 1817

Cadmium is a lustrous, silver-white, ductile, very malleable metal. Its surface has a bluish tinge and the metal is soft enough to be cut with a knife, but it tarnishes in air. It is soluble in acids but not in alkalis. It is similar in many respects to zinc but it forms more complex compounds.

Source of description

http://www.lenntech.com/periodic/elements/cd.htm

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