FIND OUT INCORRECT ORDER OF BOND ANGLE . PLZ GIVE PROPER EXPLANATION

Question

find out the incorrect order of bond angles

1-NO2+ > NO2 >NO2-

2-CH4 > NH3 >H2O

3- H2O > H2S > H2Se

4-NH3 <PH3 < AsH3

Answer 1

correct explanation to this ans is option (4). since the orbitals of the successive elements in group 15 elements increases so the repulsion bw the orbitals also increases leading to decrease in bon angles of the successive elements so the correct order of bond angles of g- 15 is NH3>PH3>.....