Can someone please help me with this question? Thanks!

(b).(I) V- shaped

(ii) V- shaped

(c). PO2- has delocalised bonding electrons, since there is only one lone pair, and the difference between the electronegativity magnitudes between Phosphorus and Oxygen is very big, hence Oxygen strong attracts the bonding electrons towards itself hence delocalization.

(d). IF2- has the smallest bonding angle. This is because it has two lone pairs which increases the repulsive forces between the bonds in order of L.P/L.P>>L.P/B.P>>B.P/B.P hence bonds are near each other there by decreasing the angle.

B.P - Bonding pair

L.P - Lone pair.

(e): IF2- has the strongest dipole moment, since it's less symmetrical than PO2- hence the dipole moments of IF2- hardly cancel out which increases it's dipole strength.