Sample a is a hard crystalline solid, which does not break easily. sample b is a solid that readily dissolves in water. sample c is a liquid that evaporates at room temperature. sample d is a colored liquid that conducts electricity. which sample is a covalent compound?

Sample C is a covalent compound.

Explanation:

A covalent compound is a compound formed by the sharing of electrons.

Properties of a covalent compound are as follows.

Out of the give samples, only sample C represents property of a covalent compound as Sample C is a liquid that evaporates at room temperature.

Thus, we can conclude that sample C is a covalent compound.

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).