Which of the following metals are obtained by electrolysis of their chlorides in molten state? 

Options

A. (i) and (iv)
B. (iii) and (iv)
C. (i) and (iii)
D. (i) and (ii)

Answer

D

Explanation

Sodium and calcium fall towards the top of reactivity series. Since, sodium and calcium are very reactive, these metals cannot be reduced to pure form, from their oxides or carbonates.
Thus, sodium and calcium are obtained by the process of electrolysis of their chlorides.