Q. bond angle in is and not because of

 1060  218 Chhattisgarh PMTChhattisgarh PMT 2008 Report Error

Solution:

The hybridisation of oxygen in water molecule is . So, water molecule must be tetrahedral and have bond angle . But due to the presence of two lone pair of electrons on oxygen atom (repulsion between lone pair-lone pair) the bond angle decreases about and the geometry becomes distorted tetrahedral or shaped.