CH1012
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10
1A OXIDES
All the 1A oxides are basic and react with water as follows:
  Li2O  +  H2O       ®  2LiOH  
  Na2O2  +  2H2O  ®  2NaOH +  H2O2 
  2MO2 + 2H2O     ®  2MOH  +  H2O2  +  O2 
• the hydroxides are all soluble in water
  (LiOH is not very soluble as there is some  
   covalency in the bonding).
• The name alkali metals reflects the
   basicity of these oxides.