Question:medium

If the ratio of the mass numbers of two nuclei is 27:125, then the ratio of their surface areas is

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For nuclei, remember these proportionality relationships with the mass number A: - Radius $R \propto A^{1/3}$ - Surface Area $S \propto R^2 \propto (A^{1/3})^2 \propto A^{2/3}$ - Volume $V \propto R^3 \propto (A^{1/3})^3 \propto A$

Updated On: Mar 30, 2026

3:5
9:25
27:125
1:1

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The Correct Option is B

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If the ratio of the mass numbers of two nuclei is 27:125, then the ratio of their surface areas is

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The Correct Option is B

Solution and Explanation

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