Term: lithium (Li)
Literally
meaning: “pertaining
to stone”
Origin: Anc Greek
λίθος/lithos(=stone, rock)
Coined/History
The element was named in 1817 by Sweeden chemist Johan August Arfvedsen (1792-01-12) when analysing petalite (LiAlSi4O10) ore. He named the metal “lithos” and later “lithium”. However Arfvedsen was never
able to isolate lithium metal from ore and the first person who isolated it
from lithium oxide was William Thomaw Brande in 1821.
Definition
Lithium is a chemical
element with atomic number 3 and atomic
mass 6.941. It belongs to the alkali metal group and has a silver-white color.
Lithium belongs to a class of medications that called antimanic agents because
decrease abnormal activity in the brain. It is used to treat episodes of mania
in people with bipolar disorder.
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