What type of bonds are present in molecular crystals?

Malleability and ductility of metals can be accounted for due to

The ionic radii of $Rb^{+}$ and $I^{-}$ are $1.46 \ \mathring{A}$ and $2.16 \ \mathring{A}$,respectively. The most probable type of structure exhibited by it is:

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:

Arrange the following forces in the increasing order of their interaction energy:
London forces,Covalent bond,Hydrogen bond,Dipole-dipole forces

Which of the following is an example of instantaneous dipole-induced dipole attraction?