Chemical Elements History and Information Osmium

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About the chemical element Osmium, its symbol, atomic number and weight, who discovered it and when.

The Atomic Elements and Their Uses

(Element) (Symbol) (Atomic number) (Atomic weight)

Osmium Os 76 190.2

Discovered by Smithson Tennant of England in 1804. The heaviest and densest of the earth's elements, osmium weighs 1,410 lb. per cubic foot. It smells awful. Osmium is used in ballpoint pen balls, nibs, and phonograph needles.


© 1975 - 1981 by David Wallechinsky & Irving Wallace
Reproduced with permission from "The People's Almanac" series of books.
All rights reserved.

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