Nuclei Ques 1

1. The mass number of $\mathrm{He}$ is $4$ and that for sulphur is $32$ . The radius of sulphur nuclei is larger than that of helium by

[1994]

(a) $\sqrt{8}$

(b) $4$

(c) $2$

(d) $8$

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Answer:

Correct Answer: 1.(c)

Solution: (c) $ \frac{R_s}{R_{H e}}=\left(\frac{A_s}{A_{H e}}\right)^{1 / 3}=\left(\frac{32}{4}\right)^{1 / 3}=2$