A metal, $M$ forms chlorides in its $+2$ and $+4$ oxidation states. Which of the following statements about these chlorides is correct?

• A

  $\mathrm{MCl}_2$ is more volatile than $\mathrm{MCl}_4$
• B

  $\mathrm{MCl}_2$ is more soluble in anhydrous ethanol than $\mathrm{MCl}_4$
• Correct answer
  C

  $\mathrm{MCl}_2$ is more ionic than $\mathrm{MCl}_4$
• D

  $\mathrm{MCl}_2$ is more easily hydrolysed than $\mathrm{MCl}_4$

Hence, the correct answer is option: 'C'.