NO. 011Alkali
Na
Sodium
Sodium is a soft, silvery Alkali that reacts violently with water and air. It plays a vital role in biological processes such as nerve transmission and fluid balance. Industrially, sodium compounds are widely used in food, chemicals, and manufacturing.
Technical Specifications
Atomic Mass22.99 u
Density0.971 g/cm³
Melting Point370.9 K
Boiling Point1156 K
Atomic Radius186 pm
Electronegativity0.93
Ionization Energy496 kJ/mol
Electron Affinity52.8 kJ/mol
Bonding TypeMetallic
Oxidation States1
Acid/BaseBasic
ReactivityHigh
Electron Configuration
[Ne] 3s1
Discovered ByHumphry Davy
Year1807
Known Isotopes
Sodium-23