Question

The major binding force of diamond, silicon and quartz is

• A. Electrostatic force
• B. Electrical attraction
• C. Covalent bond force
• D. Non-covalent bond force
• E. Van der Waals forces

Answer 1

The correct option is C

Covalent bond force

Explanation for correct option:

(C) Covalent bond force.

• The diamond, silicon and quartz have the covalent bond force as a major binding force.
• The covalent force is formed by the mutual sharing of electrons between the atmos in a three-dimensional network of covalent bonds.
• Diamond is a hard covalent solid with a giant network of ${\mathrm{sp}}^3$hybridized carbon.
• The hard nature of diamonds is due to their strong covalent bond force. So, this is the correct option.

Explanation for incorrect option:

(A) Electrostatic force.

The electrostatic force is related to the repulsive and attractive nature of electric charges and ions.

(B) Electrical attraction.

Electrical attraction is related to the electric charges not to atoms here.

(D) Non-covalent bond force.

Diamond, silicon and quartz have covalent force, not non-covalent bond force.

(E) Van der Waals force.

Van der Waals force is a weak force of attraction between non-polar molecules.

Therefore the correct option is (C) Covalent bond force.