Osmium: historical information
- Discoveror: Smithson Tennant
- Place of discovery: England
- Date of discovery: 1803
- Origin of name : from the Greek word "osme" meaning "smell".
Osmium was discovered in 1803 by Smithson Tennant in the dark coloured residue left when crude platinum is dissolved by aqua regia (a mixture of hydrochloric and nitric acid). This dark residue contains both osmium (named after osme meaning odour) and iridium.
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