Chemical Properties of Alkali Metals

  1. Group 1 metals are very reactive metals.
  2. They all show the same chemical properties.
  3. They can react with water and non-metal such as oxygen and chlorine to form a new compound.
  4. The table to the right shows the electron arrangement of all the Group 1 metals. All the atoms of Group 1 metal consist of 1 valence electron.
  5. When an alkali metal atoms react, it loses the valence electron to form a positively charged ion. 
  6. Example:
    LiL i + +e NaN a + +e K K + +e
  7. They tend to react mainly with non-metals to form ionic compounds.

Safety Precaution

  1. Alkali metals are very reactive.
  2. Therefore it must be kept in paraffin oil to prevent them from reacting with oxygen and water vapour in the air.
  3. We must avoid to hold group 1 metals with bare hand because they may react with water on our hand.
  4. We must wear safety goggles and gloves during handling experiment involving group 1 metal.


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