Question

Assertion :Radioactive nuclei emit $\beta -particles$. Reason: Electrons exist inside the nucleus.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Assertion is incorrect but Reason is correct

Answer 1

The correct option is C Assertion is correct but Reason is incorrect

The Assertion is correct because the radioactive particle can emit $\beta$ particles, $\alpha$ particles as well as $\gamma$ particles.

For example : $\beta$ emission nuclear reaction

${}_6^{14}C{\to }_7^{14}N{+}_{-1}^{0}e\left(\beta \right)+antineutrino$

Electron cannot exist inside the nucleus. Hence the reason is incorrect.