Give reason: “Although geometries of ammonia and water molecules are distorted tetrahedral, bond angle in water is less than that of ammonia”.
In case of ammonia, only one lone pair of electron is present and due to repulsion between lp – bp, the bond angle between bond pairs is 1070. In case of water, two lone pairs of electrons are present. Thus lp – lp repulsion is more than lp – bp. So the bond angle is reduced to 104.50.