The correct order of increasing bond angles in the following species are:
According to VSEPR theory repulsion order
As the number of lone pairs of electrons increases, the bond angle decreases due to repulsion between Ip - Ip Moreover, as the electronegativity of the central atom decreases, the bond angle decreases. Hence, the order of bond angle is (Cl is less electronegative as compared to O).
The correct answer isoption 3.