Q. bond angle in is and not because of

 4049  228 JIPMERJIPMER 2009Chemical Bonding and Molecular Structure 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 tertrahedral or V-shaped.