The Born-Haber cycle is used to determine:

The formal charges of $N_{(1)}$,$N_{(2)}$,and $O$ atoms in the structure $N_{(1)} = N_{(2)} = O$ are respectively:

The correct order of the $O-O$ bond length in $O_2$,$H_2O_2$,and $O_3$ is:

The pairs among $A = [SO_3^{2-}, CO_3^{2-}]$,$B = [O_2^{2-}, F_2]$,$C = [CN^-, CO]$,$D = [NH_3, H_3O^+]$ and $E = [MnO_4^{2-}, CrO_4^{2-}]$ that do not have similar Lewis dot structures are:

Compound $X$ is the anhydride of sulphuric acid. The number of $\sigma$-bonds and the number of $\pi$-bonds present in $X$ are,respectively:

Which of the following does not obey the octet rule?