Question

Which property is typical of a covalent compound?

A. They are extremely hard solids.

B. They have low melting and boiling points. C. They conduct electricity. D. They have rigid crystal structures. E. They exist only as gases and liquids.

Answer 1

Answer: the correct option is (C).

Step-by-step explanation:

Covalent compounds have lower melting and boiling points due to presence of weak inter-molecular forces by which molecules are weakly associated to each other. Hence, melting and boiling of covalent compounds occurs at low temperatures.

Usually, Covalents compounds have following properties:

• They are brittle solids
• They do not conduct electricity
• They do not have rigid crystal structure.
• They exist in all states: solids, liquids and gases.

Answer 2

Answer: Option (B) is the correct answer.

Explanation:

A covalent compound is a compound whose atoms are bonded together by sharing of electrons.

Also it is known that in covalent compounds weak inter molecular forces of attraction exists. Due to which it is easy to break the bond between atoms.

Hence, covalent compounds have low melting and boiling point .

Other properties of covalent compounds are as follows.

• They are brittle in nature.

• The do not have a rigid crystal structure.

• They exist as solids, liquids and gases.

• Covalent compounds do not conduct electricity.

Thus, we can conclude that out of the given options property that is typical of a covalent compound is that they have low melting and boiling points.