SAMARIUM

 SAMARIUM (62) (Solid)  146(70,000,000 years)A  151(93 years)B-

Atomic radius:2.59Deg. A (Quantum mech. value for a free atom)

Atomic volume:19.95 cm(3)/mol at 300Deg. Kelvin

Atomic weight:150.4 (Based on Carbon 12)

Boiling point:2064Deg. Kelvin

Covalent radius:1.62Deg. A

Crystal structure:Rhombohedral

Density:7.54 g/cm(3) at 300Deg. Kelvin

Electrical conductivity:.00956 10(x6) Ohm(x.1) cm(x.1) at 293Deg. Kelvin

Electron configuration:1s(2)2s(2)p(6)3s(2)p(6)4s(2)3d(10)p(6)4d(10)5s(2)p(6)

4f(6)6s(2)

Electronegativity:1.17 (Pauling's)

First ionization potential:5.64 V

Heat of fusion:8.63 kJ/mol at melting point

Heat of vaporization:166.4 kJ/mol at boiling point

Melting point:1345Deg. Kelvin

Oxidation states:3,2 basic(3)

Specific heat capacity:.2 Jg(x.1) K(x.1)) at 300Deg. Kelvin

Thermal conductivity:.133 W cm(x.1) K(x.1) at 300Deg. Kelvin

Description:A pale-gray,lusterous,metallic element that is used especially in

alloys which form permanent magnets.

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