11Na
Sodium
Alkali MetalSodium (Na) is element 11, an alkali metal, in period 3 and group 1 of the periodic table. Its standard atomic weight is 22.99, it melts at 97.72 °C and boils at 883 °C. Discovered by Humphry Davy, 1807.
Atomic Number11
SymbolNa
NameSodium
Atomic Weight22.99 u
CategoryAlkali Metal
Period3
Group1
Melting Point97.72 °C
Boiling Point883 °C
Density0.971 g/cm³
Electron Config[Ne] 3s1
Discovered ByHumphry Davy, 1807