$\text{ Which of the following statements is true for ionic solids? }$

$\text{ Structural units have dipole-dipole interactions }$

$\text{ Structural units have strong electrostatic force of attraction }$

$\text{ Under the electric field cations and anions acquire translatory motion in opposite directions }$

$\text{ Ionic solids are soluble in }{\mathrm{CCl}}_4,{\mathrm{C}}_6{\mathrm{H}}_6\text{, etc. }$