Although geometries of NH_3 and H_2O molecules are distorted tetrahedral,bond angle in water is less than that of ammonia.Discuss.

Although geometries of NH_3 and H_2O molecules are distorted tetrahedr

1.	Although geometries of NH_3 and H_2O molecules are distorted tetrahedral,bond angle in water is less than that of ammonia.Discuss.
Answer» Solution :In `NH_3`,there is only one pair on nitrogen atom to repel the BOND pairs WHEREAS in `H_2O`, there are two lone pairs on OXYGEN atom to repel the bond pairs.Hence the repulsion on bond pairs is greater in `H_2O`, than in `NH_3` and so the bond ANGLE is LESS.