Electricity does not pass through ionic compounds in which of the following states?

Which of the following shows electrical conduction?

Total number of molecules which have cation-anion pair out of $I_{2(s)}$,dry ice $(CO_{2(s)})$,$PCl_{5(s)}$,$N_2O_{5(s)}$,$PBr_{5(g)}$ is

Which of the following has minimum lattice energy $:-$

In which molecule is the van der Waals force likely to be the most important factor in determining the melting point $(m.pt.)$ and boiling point $(b.pt.)$?

The radii and charges of six ions are given below:

Ion	$J^{+}$	$L^{+}$	$M^{2+}$	$X^{-}$	$Y^{-}$	$Z^{2-}$
Radius $(nm)$	$0.14$	$0.18$	$0.15$	$0.14$	$0.18$	$0.15$

If the ionic compounds $JX$,$LY$,and $MZ$ have the same crystal structure,then the correct order of their lattice energy is: