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Assertion : For maximum stability N/P ra...

Assertion : For maximum stability N/P ratio must be equal to 1
Reason : Loss of `alpha - beta -` particles has no role in N/P ratio

A

If both assertion and reason are true and the reason is the correct explanation of the assertion

B

If both assertion and reason are true but reason is not the correct explanantion of the assertion

C

If assertion is true but reason is false

D

If the assertion and reason both are false

Text Solution

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The correct Answer is:
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Analyze the Assertion The assertion states that "For maximum stability, the N/P (neutron-to-proton) ratio must be equal to 1." - **Explanation**: The neutron-to-proton ratio is crucial for the stability of a nucleus. For lighter elements, a ratio close to 1 is often observed for maximum stability. As elements become heavier, the ratio tends to increase (more neutrons than protons) to counteract the repulsive forces between the positively charged protons. Therefore, while the assertion is somewhat simplified, it is generally correct for lighter elements. ### Step 2: Analyze the Reason The reason states that "Loss of alpha and beta particles has no role in N/P ratio." - **Explanation**: This statement is incorrect. The loss of alpha particles (which consist of 2 protons and 2 neutrons) will decrease both the number of neutrons and protons, thus affecting the N/P ratio. Similarly, the emission of beta particles involves the conversion of a neutron into a proton (or vice versa), which directly alters the N/P ratio. Therefore, the reason provided does not support the assertion. ### Step 3: Conclusion Based on the analysis: - The assertion is correct, as a neutron-to-proton ratio of 1 is ideal for stability in lighter nuclei. - The reason is incorrect because the loss of alpha and beta particles does indeed affect the N/P ratio. ### Final Answer - **Assertion**: True - **Reason**: False
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Analyze the Assertion The assertion states that "For maximum stability, the N/P (neutron-to-proton) ratio must be equal to 1." - **Explanation**: The neutron-to-proton ratio is crucial for the stability of a nucleus. For lighter elements, a ratio close to 1 is often observed for maximum stability. As elements become heavier, the ratio tends to increase (more neutrons than protons) to counteract the repulsive forces between the positively charged protons. Therefore, while the assertion is somewhat simplified, it is generally correct for lighter elements. ### Step 2: Analyze the Reason ...
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