Reaction between X and Y, forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z?

Question

$\begin{array}{1 1} \text{a. Has high melting point} \\ \text{ b. Has low melting point} \\ \text{ c. Conducts electricity in molten state} \\ \text{ d. Occurs as solid} \end{array}$