Atoms And Nuclei Question 167
Question: Radius of $ _{2}^{4}He $ nucleus is 3 Fermi. The radius of $ 3\to 2 $ nucleus will be [CPMT 1999]
Options:
A) 5 Fermi
B) 6 Fermi
C) 11.16 Fermi
D) 8 Fermi
Show Answer
Answer:
Correct Answer: C
Solution:
We have $ r\propto {{A}^{1/3}}\Rightarrow \frac{r_{2}}{r_{1}}={{( \frac{A_{2}}{A_{1}} )}^{1/3}}={{( \frac{206}{4} )}^{1/3}} $
$ \therefore r_{2}=3{{( \frac{206}{4} )}^{1/3}}=11.6\ Fermi $ .
