Sodium - Na

By: Leslie Kwok

Basic Information

Symbol - Na

Atomic Number - 11

Atomic Weight - 22.990

Group - Alkali metal (group 1)

Period - 3

Color - Silvery white

Classification - Metallic

Sodium History

  • Sodium was discovered in 1807, at England by Sir Humphry Davy
  • Sodium was collected at the cathode
  • Sodium this word cam from English name "Soda"
  • Sodium was one of the element the has an alchemical symbol

Uses Of Sodium

  • Sodium compounds including common salt, soda ash, baking soda, and caustic soda
  • Caustic soda is important to the paper, glass, soap, textile, petroleum, chemical, and metal industries
  • Soap is generally a sodium salt of fatty acids
  • Sodium is used in the reduction of organic esters
  • It is in the preparation of organic compounds
  • Sodium vapor is used in lamps or street lighting

Sodium Around Us

  • Life could not exist without compounds of sodium
  • Human diet must contain a sensible amount of sodium
  • The sodium cation is the main extracellular (outside cells) cation in animals and is important for nerve function in animals
  • Prolonged sweating results in sodium ion loss in sweat and it is most important that the sodium ion is replaced through proper diet
  • It helps maintains the fluid balance in the body
  • Sodium influences contraction and relaxation of muscles
  • Sodium compounds hold water in body tissues
  • It allows nutrient absorption


More About Sodium

  • It never found as the free element in nature
  • Is the sixth most abundant element in the earth's crust
  • Sodium is very reactive
  • It is combustible
  • It has a melting point at 97.72 Celsius
  • Sodium has an characteristic of orange or yellow color to flames