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Atomic symbol - Os
Atomic weight - 190.2
Atomic number - 76
Electron configuration - 2-8-18-32-14-2
Oxidation states - +3, +4
State of matter - solid
Heavy metal-ductile
Discovered in 1804 by Smithson Tennant
Boils at 5000 .C, melts at 3000 .C

Osmium is the densest naturally occuring element. It has a gray-white color
and is hard, and brittle. It has been used in phonograph needles.

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