Which of the following compounds will be dissociated into its constituent ions?

When electric current is passed through an electrolyte in its molten or aqueous state, the electrolyte is dissociated into its constituent ions.
Molten $NaCl$ breaks down to form $N{a}^{+}$ and $C{l}^{-}$ where Sodium transfers its valence electron to Chlorine. So Sodium gets one positive charge and Chlorine gets one negative charge.
Molten $CaC{l}_2$ breaks down to form $C{a}^{2+}$ and two $C{l}^{-}$ ion where Calcium transfers its two valence electron to Chlorine. Hence Calcium gets two positive charges and each Chlorine atom gets one negative charge.