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!B.DTA
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1987-01-01
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841b
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20 lines
BORON (5)
Atomic radius:1.17Deg. A
Atomic volume:4.6 cm(3)/mol at 300Deg. Kelvin
Atomic weight:10.81 (Based on Carbon 12)
Boiling point:4275Deg. Kelvin
Covalent radius:.82Deg. A
Crystal structure:Rhombohedral
Density:2.34 g/cm(3) at 300Deg. Kelvin
Electrical conductivity:10(x12)amu 10(x6) Ohm(x.1) cm(x.1) at 293Deg. Kelvin
Electron configuration:1s(2)2s(2)p(1)
Electronegativity:2.04 (Pauling's)
First ionization potential:8.298 V
Heat of fusion:50.2 kJ/mol at melting point
Heat of vaporization:489.7 kJ/mol at boiling point
Melting point:2300Deg. Kelvin
Oxidation states:3 acidic
Specific heat capacity:102 Jg(x.1) K(x.1) at 300Deg. Kelvin
Thermal conductivity:.27 W cm(x.1) K(x.1) at 300Deg. Kelvin
Description:A trivalent metalloid element found in nature only in combination,
and used in metallurgy and nucleonics.