- Atomic Mass: 190.23
- Atomic Radius in picometers (pm): 185 pm
- Density: 22.57 grams per cubic centimeter
- Melting Point: 3033 °C (5491°F)
- Boiling Point: 5012°C (9054°F)
- At room temperature (22°C), this element is a: Solid
- Appearance: Brittle, bluish white
- Conductivity: 12.3 x 106 S m-1 It’s a conductor
- Malleability: Not malleable
- Hardness: moderatley hard
- Other physical properties: Osmium is unworkable as a metal. It cannot be melted and shaped like most metals.
- Flammability: Osmium not flammable
- Reactivity: Osmium not highly reactive
Location on Periodic Table
Application and Uses
Osmium is mostly used making high quality pen nibs. It’s added to platinum or indium to make them harder as an alloy. Also, its used for needles and electrical contacts. It is also used in the chemical industry as a catalyst.
It’s used with platinum to make it harder as an alloy. Osmium tetroxide (OsO 4) is in demand for use as a catalyst for research purposes. The problem is that this compound of osmium is very dangerous to use.
- Element Card: Gray, Theodore W. (2008). The Photographic Card Deck of the Elements.
- Elements Book: Gray, Theodore W. (2009). The Elements: A visual exploration of every known atom in the universe. New York: Black Dog & Leventhal Publishers, Inc.
- Website: http://www.rsc.org/periodic-table © Royal Society of Chemistry 2015