Which of the following statements is incorrect for $PCl_5$?

The increasing order of $O-N-O$ bond angle in the species $NO_2$, $NO_2^+$ and $NO_2^-$ is

The bond angles of $NH_3$,$NH_4^+$,and $NH_2^-$ are in the order:

Given below are two statements:
Statement $I$: The number of compounds among $SO_2$, $SO_3$, $SF_4$, $SF_6$ and $H_2S$ in which sulphur does not obey the Octet rule is $3$.
Statement $II$: Among $[H_2O, ClF_3, SF_4]$, $[NH_3, BrF_5, SF_4]$, $[BrF_5, ClF_3, XeF_4]$ and $[XeF_4, ClF_3, H_2O]$, the number of sets in which all the molecules have one lone pair of electrons on the central atom is $1$.

Which of the following is not isostructural with $SiCl_4$?

Explain: The shape of $H_2O$ is $V$ (angular).