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Osmium

What the name means: Osmium derives from the Greek word Osme, meaning "stench".

Osmium

Osmium atom

Osmium atom

 

 

(Note: Can also exist as 1+, 2+, 3+, 5+, 6+, 7+ or 8+ ions)

Osmium ion

 

Osmium ion

 

Who identified osmium?: In 1803, Smithson Tennant and William Hyde Wollaston's attempt to purify platinum for commercial purposes led them to identify four new elements present in the platinum ore - palladium, rhodium, iridium and osmium

In order to purify platinum the two chemists dissolved it in a mixture of concentrated nitric acid and concentrated hydrochloric acid in a 1:3 ratio (a mixture known as aqua regia). There was a black residue remaining after this process. They treated the residue with acids and alkalis during a complex series of reactions. This led them to the identification of osmium (so named because its oxide had a very unpleasant smell)

 

Properties

OSPROPS

STP = standard temperature and pressure.
Usually considered as room temperature and pressure.

 

About Osmium: Osmium is a blue-grey solid that is found, as the element, alloyed to platinum in its ores. Osmium is quite rare with about the same abundance as gold in the Earth's crust. It is extremely resistant to corrosion and its density (mass divided by volume) is twice that of the element lead. Osmium is used in alloys to strengthen other metals, such as platinum.

 

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