Sodium is a chemical element with symbol Na and atomic number 11. It is a soft, silvery-white, highly reactive metal. It is the sixth most abundant element in the Earth crust, and exists in numerous minerals such as feldspars, sodalite and rock salt (NaCl).

Atomic Weight: 22.98976928
Density:       0.968 g/cm3
Melting Point: 97.72 °C
Boiling Point: 883 °C