Which of the following substances is isostructural with carbon dioxide $(CO_2)$?

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

The number of species from the following carrying a single lone pair on the central atom Xenon is $.....$: $XeF_5^{+}, XeO_3, XeO_2F_2, XeF_5^{-}, XeO_3F_2, XeOF_4, XeF_4$

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 $1$.

The tetra-atomic molecules/ions with different shapes are

Identify the pair of species with same geometries.