Question

Assertion (A): All nuclei are not of the same size.

Reason (R): The size of the nucleus depends on atomic mass.

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.

• Both (A) and (R) are false.

Answer 1

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

Explanation:

The radius of nucleus is given by R = R₀A^1/3, For different nuclei mass number, A is different, therefore R is different, Hence, both assertion and reason are correct and reason is the correct explanation of assertion