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Frostbyte's 1980s DOS Shareware Collection
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IR.DTA
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1987-01-01
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960b
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21 lines
IRIDIUM (77) (Solid) 192(74.2 days)B-,B+,EC
Atomic radius:1.87Deg. A (Quantum mech .value for a free atom)
Atomic volume:8.54 cm(3)/mol at 300Deg. Kelvin
Atomic weight:192.222 (Based on Carbon 12)
Boiling point:4701Deg. Kelvin
Covalent radius:1.27Deg. A
Crystal structure:Cubic,face centered
Density:22.5 g/cm(3) at 300Deg. Kelvin
Electrical conductivity:.197 10(x6) Ohm(x.1) cm(x.1) at 293Deg. Kelvin
Electron configuration:1s(2)2s(2)p(2)p(6)3s(2)p(6)3d(10)4s(2)p(6)4d(10)5s(2)
p(6)4f(14)5d(7)6s(2)
Electronegativity:2.2 (Pauling's)
First ionization potential:9.1 V
Heat of fusion:26.1 kJ/mol at melting point
Heat of vaporization:604 kJ/mol at boiling point
Melting point:2716Deg. Kelvin
Oxidation states:2,3,4,6,7 basic(7)
Specific heat capacity:.130 Jg(x.1) K(x.1) at 300Deg. Kelvin
Thermal conductivity:1.47 W cm(x.1) K(x.1) at 300Deg. Kelvin
Description:A silver-white,hard,brittle,very heavy metallic element of the
platinum group.