Sodium is the eleventh element of the periodic table. These sodium facts contain chemical and physical data along with general information and history. Basic Sodium Facts Name: Sodium Atomic Number: 11 Element Symbol: Na Group: 1 Period: 3 Block: s Element Family: alkali metal Atomic Mass: 22.989 769 28(2) Electron Configuration: [Ne]3s1 (shorthand) or 1s22s22p63s1 (full) Discovery: Sir Humphry Davy in […]