SULPHUR

SULPHUR (16)  16S=35(87.2 days)B-
Atomic radius:1.09Deg. A (Quantum mech. value for a free atom)
Atomic volume:15.5 cm(3)/mol at 300Deg. Kelvin
Atomic weight:32.06 (Based on Carbon 12)
Boiling point:717.75Deg. Kelvin
Covalent radius:1.02Deg. A
Crystal structure:Orthohombic
Density:2.07 g/cm(3) at 300Deg. Kelvin
Electrical conductivity:.5 10(x22) Ohm(x.1) K(x.1) at 293Deg. Kelvin
Electron configuration:1s(2)2s(2)p(6)3s(2)p(4)
Electronegativity:2.58 (Pauling's)
First ionization potential:10.36 V
Heat of fusion:1.7175 kJ/mol at melting point
Heat of vaporization:
Melting point:388.36Deg. Kelvin
Oxidation states:+-2,4,6 very acidic
Specific heat capacity:.71 Jg(x.1) K(x.1) at 300Deg. Kelvin
Thermal conductivity:.00269 W cm(x.1) K(x.1) at 300Deg. Kelvin
Description:A nonmetallic element that occurs either free or in combination with
sulphates and sulphides,is a constituent of proteins,exists in several
allotropic forms including yellow orthorhombic crystals,resembles oxygen
chemically but is less active and more acidic,and is used especially in the
chemical and paper industries,in rubber vulcanization,and in medicine for the
treating of skin diseases.

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