Symbol Na
Atomic Number 11
Atomic Mass 22.990
Discovered by Sodium was discovered by Humphry Davy

Physical Properties of Sodium

  • Sodium has a strong metallic lustre and in colour is very analogous to silver.
  • It is soft at common temperatures that it may be formed into leaves by the pressure of the fingers.
  • Sodium compounds soon tarnish on exposure to the air, though less rapidly than potassium.
  • Sodium is instantly oxidized by water, hydrogen gas in temporary union with a little sodium being disengaged.

Chemical Properties of Sodium

Group 1 Melting point 97.794°C, 208.029°F, 370.944 K
Period 3 Boiling point 882.940°C, 1621.292°F, 1156.090 K
Block s Density (g cm−3) 0.97
Atomic number 11 Relative atomic mass 22.990  
State at 20°C Gas Key isotopes 23Na
Electron configuration [Ne] 3s1 CAS number 7440-23-5
ChemSpider ID 4514534 ChemSpider is a free chemical structure database

What is Sodium?

  • Sodium is a member of the alkali metal family with lithium and potassium. Being one of the two elements in our table salt is its the biggest claim to fame.
  • We get sodium chloride (NaCl) when sodium bonds with chlorine (Cl). It is also used as a salt in fertilizers.
  • Sodium is reactive, soft metal with a low melting point and most important of all the alkaline metals from the commercial point of view. Sodium reacts rapidly with water, snow, and ice to produce sodium hydroxide.
  • When metallic sodium is exposed to air, it loses its silver appearance and develops an opaque grey colour layer which is a coating of sodium oxide. Sodium does not react with nitrogen even at very high temperatures but reacts with ammonia to form sodium amide.
  • Sodium reacts with hydrogen above 200ºC to form sodium hydride. It also reacts with various metallic halides to form sodium chloride and the metal.
  • With an atomic number of 11, it is represented by the symbol Na in the Periodic table.

Uses of Sodium

  • It also used in improving the structure of certain alloys; soaps, purification of molten metals and in sodium vapour lamps.
  • Sodium is a component of sodium chloride, which is a very important compound found in the living environment.
  • Sodium is important in the manufacturing of organic compounds and in making esters.
  • Solid sodium carbonate is required in making glass.

Also, Read:
Sodium Borohydride
Titration of Hydrochloric Acid against Standard Sodium Carbonate
Titration of Oxalic Acid against Sodium Hydroxide

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  1. it was a well explained

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