CHROMIUM

 CHROMIUM (24) (Solid)  51(27.7 days)EC

Atomic radius:1.85Deg. A (Quantum mech. value for free atom)

Atomic volume:7.23 cm(3)/mol at 300Deg. Kelvin

Atomic weight:51.996 (Based on Carbon 12)

Boiling point:2945Deg. Kelvin

Covalent radius:1.18Deg. A

Crystal structure:Cubic,body centered

Density:7.19 g/cm(3) at 300Deg. Kelvin

Electrical conductivity:.0774 10(6) Ohm(x.1) K(x.1) at 293Deg. Kelvin

Electron configuration:1s(2)2s(2)p(6)3s(2)p(6)3d(5)4s(1)

Electronegativity:1.66(Pauling's)

First ionization potential:6.766 V

Heat of fusion:16.9 kJ/mol at 300Deg. Kelvin

Heat of vaporization:344.3 kJ/mol at boiling point

Melting point:2130Deg. Kelvin

Oxidation states:6,3,2 very acidic(6)

Specific heat capacity:.45 Jg(x.1) K(x.1) at 300Deg. Kelvin

Thermal conductivity:.937 W cm(x.1) K(x.1) at 300Deg. Kelvin

Description:A blue-white metallic element found naturally only in combination

and is used especially in alloys and electroplating.