The correct order of covalent bond character of $\mathrm{BCl}_3, \mathrm{CCl}_4, \mathrm{BeCl}_2, \mathrm{LiCl}$ is

In which of the following pairs, both molecules possess dipole moment?

Which of the following orders are correct regarding their covalent character?

(i) $\mathrm{KF}<\mathrm{KI}$

(ii) $\mathrm{LiF}<\mathrm{KF}$

(iii) $\mathrm{SnCl}_2<\mathrm{SnCl}_4$

(iv) $\mathrm{NaCl}<\mathrm{CuCl}$

The correct option is

$$ \text { Observe the following sets. } $$

$$ \begin{array}{lll} \hline \text { Order } & \text { Property } \\ \hline \text { (i) } \mathrm{NH}_3>\mathrm{H}_2 \mathrm{O}>\mathrm{SO}_2 & \text { Bond angle } \\ \hline \text { (ii) } \mathrm{H}_2 \mathrm{O}>\mathrm{NH}_3>\mathrm{H}_2 \mathrm{~S} & \text { Dipole moment } \\ \text { (iii) } \mathrm{N}_2>\mathrm{O}_2>\mathrm{H}_2 & \text { Bond enthalpy } \\ \hline \text { (iv) } \mathrm{NO}^{+}>\mathrm{O}_2>\mathrm{O}_2^{2-} & \text { Bond order } \\ \hline \end{array} $$