Which one of the following compounds is having maximum 'lone pair-lone pair' electron repulsions?

Identify the option in which the molecules are arranged in the correct order of their dipole moments

The bond order of $\mathrm{O}_2^{+}$is $x$. The bond orders of $\mathrm{O}_2^{-}$and $\mathrm{O}_2^{2+}$ are respectively

In which of the following options, molecules are correctly arranged with respect to their bond angles.