Question

Assertion (A): Atoms can combine either by the transfer of valence electrons from one atom to another or by sharing of valence electrons.

Reason (R): Sharing and transfer of valence electrons is done by atoms to have an octet in their valence shell.

Options

• Both A and R are true and R is the correct explanation of A.

• Both A and R are true but R is not the correct explanation of A.

• A is true but R is false.

• A is false but R is true.

Answer 1

Both A and R are true and R is the correct explanation of A.

Explanation:

Atoms can build a covalent connection by sharing a pair of valence electrons, while an ionic bond is created when atoms transfer one or more electrons and create a strong electrostatic attraction. Atoms always strive to have eight electrons in their valence shell, which is their stable electron configuration. Therefore, reason (R) accurately explains assertion (A), and both assertion (A) and reason (R) are true.