Question

Assertion: Mass of an atom is mainly of the nucleus similar.

Reason: The nucleus contains both protons and neutrons.

• A. Both assertion and reason are correct and the reason is the correct explanation for assertion.
• B. Both assertion and reason are correct and the reason is not the correct explanation for the assertion.
• C. The assertion is correct but the reason is incorrect.
• D. The assertion is incorrect but the reason is correct

Answer 1

The correct option is A

Both assertion and reason are correct and the reason is the correct explanation for assertion.

Explanation for the Assertion statement:

The mass of an atom is mainly to the nucleus similar because the mass of the atom depends on the number of neutrons and protons present in the nucleus.

Explanation for the Reason statement:

The nucleus of an atom contains protons and neutrons, and electrons have negligible mass. Hence, the mass of an atom depends on protons present in the nucleus.

Therefore, option (A) is correct.