Nuclei - Result Question 19
21. The ratio of the radii of the nuclei $ _{13} A l^{27}$ and $ _{52} Te^{125}$ is approximately
(a) $6: 10$
(b) $13: 52$
(c) $40: 177$
(d) $14: 73$
[1990]
Topic 2: Mass-Energy & Nuclear Reactions
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Answer:
Correct Answer: 21. (a)
Solution:
(a) $R \propto(A)^{1 / 3}$
$\therefore R _{A l} \propto(27)^{1 / 3}$ and $R _{T e} \propto(125)^{1 / 3}$
$\therefore \frac{R _{A l}}{R _{T e}}=\frac{3}{5}=\frac{6}{10}$
