3Li
Lithium
Alkali MetalLithium (Li) is element 3, an alkali metal, in period 2 and group 1 of the periodic table. Its standard atomic weight is 6.941, it melts at 180.54 °C and boils at 1342 °C. Discovered by Johan August Arfwedson, 1817.
Atomic Number3
SymbolLi
NameLithium
Atomic Weight6.941 u
CategoryAlkali Metal
Period2
Group1
Melting Point180.54 °C
Boiling Point1342 °C
Density0.534 g/cm³
Electron Config[He] 2s1
Discovered ByJohan August Arfwedson, 1817