The correct order of increasing bond lengths of $\mathrm{C}-\mathrm{H}$, $\mathrm{O}-\mathrm{H}, \mathrm{C}-\mathrm{C}$ and $\mathrm{H}-\mathrm{H}$ is

The sum of bond order of $\mathrm{O}_2^{2+}, \mathrm{O}_2^{2-}, \mathrm{O}_2^{+}, \mathrm{O}_2^{-}, \mathrm{O}_2$ and sum of the unpaired electrons present in them respectively are

$$ \text { Which of the following sets are correctly matched? } $$

$$ \begin{array}{llll} \hline & \text { Molecule } & \text { Hybridisation } & \text { Geometry } \\ \hline \text { I. } & \mathrm{BrF}_5 & s p^3 d^2 & \text { Square pyramidal } \\ \hline \text { II. } & \mathrm{XeF}_6 & s p^3 d^3 & \text { Distorted octahedral } \\ \hline \text { III. } & \mathrm{SF}_4 & d s p^2 & \text { Square planar } \\ \hline \text { IV. } & \mathrm{PbCl}_2 & s p & \text { Linear } \\ \hline \end{array} $$

The order of dipole moments of $\mathrm{H}_2 \mathrm{O}(A), \mathrm{CHCl}_3(B)$ and $\mathrm{NH}_3(C)$ is