The correct order of the increasing bond angles in the following triatomic species is :  

Correct statement among the following regarding the shape of  HgCl₂, SnCl₂ and F₂O is:

What is the correct increasing order of bond angles for the following species: \(\mathrm{NH}_2^{-},\mathrm{NH}_3~ \text{and} ~\mathrm{NH}_4^{+}\)?

1. ${\mathrm{NH}}_2^{-}>{\mathrm{NH}}_3<mspace\; width="1em"></mspace>>{\mathrm{NH}}_4^{+}$

2. ${\mathrm{NH}}_4^{+}>{\mathrm{NH}}_3<mspace\; width="1em"></mspace>>{\mathrm{NH}}_2^{-}$

3. ${\mathrm{NH}}_3^{}>{\mathrm{NH}}_{{}_2}^{-}<mspace\; width="1em"></mspace>>{\mathrm{NH}}_4^{+}$

4. ${\mathrm{NH}}_3^{}>{\mathrm{NH}}_4^{+}<mspace\; width="1em"></mspace>>{\mathrm{NH}}_2^{-}$

Predict the correct order among the following.

(1) lone pair-lone pair>bond pair-bond pair>lone pair-bond pair

(2) bond pair-bond pair>lone pair-bond pair>lone pair-lone pair

(3) lone pair-bond pair>bond pair-bond pair>lone pair-lone pair

(4) lone pair-lone pair>lone pair-bond pair>bond pair-bond pair

The incorrect statement among the following regarding the molecules of CH_4, NH₃, and H₂O is: