Learning objectives


CO2




SO2




N2O
This  module is concerned with predicting the shape of a molecule in which two or more atoms are bonded to a central atom from the formula of the compound. 

Examples are restricted to those
 
  • with no more than four electron pair domains at the central atom.
     
  • which have hydrogen, nitrogen or oxygen as the outer atoms
     
  •  which have  a multiple bond between the central and one of the outer atoms
.
On completion of the module you should be able to
 
  • draw the the Lewis structure of a molecule of type EXn which fits the restrictions given above and use this to predict the shape of the molecule.