Lithium (Li) is a chemical element belonging to the category Alkali metal, with atomic number 3 and atomic mass 6.9400 u. This sheet describes its fundamental properties, periodic position and physical characteristics.
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Astronomy · Chemical element
Lithium
EL3
Identity
Name: Lithium
Symbol: Li
Atomic number: 3
Atomic mass: 6.9400 u
Position in the periodic table
Group: 1
Period: 2
Category: Alkali metal
Physico-chemical properties
Standard state: Solid
Melting point: 180.5°C
Boiling point: 1342°C
Density: 0.534 g/cm³
Electron configuration: 1s² 2s¹
Scientific description
Lithium is a chemical element with symbol Li and atomic number 3.
It belongs to the category of Alkali metal and occupies group 1 and period 2.
Its standard atomic mass is 6.9400 u.