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      3    

3 Li Lithium

Alkali metal, mass: 6.941 u, 2 stable isotopes (6, 7), abundance rank (earth/space): 27/30

Click image to magnify. 0.5 grams lithium under argon. Original size of the largest piece in cm: 0.3 x 4
Lithium Lithium pieces
Lithium is the lightest of all metals, with only half the weight of water. Like many other elements, it reacts with air, but opposite to most of those hardly with oxygen, but preferably with nitrogen. Thereby it quickly forms lithium nitride, Li3N, which in these images makes a dark layer on the otherwise light silver metal. Lithium is often used in disposable and rechargeable batteries, lithium salts are used in medicine as treatment for mental disorders.

Lithium white corroded
During more than one year, white powder slowly formed. I suppose this is lithium oxide, Li2O, due to a small residue of oxygen in the argon atmosphere.


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