Atoms And Nuclei Question 12
Question: In a beryllium atom, if a0 be the radius of the first orbit, then the radius of the second orbit will be in general [CBSE PMT 1992; Roorkee 1993; BHU 1998]
Options:
A) $ na_{0} $
B) $ a_{0} $
C) $ n^{2}a_{0} $
D) $ \frac{a_{0}}{n^{2}} $
Show Answer
Answer:
Correct Answer: C
Solution:
$ r\propto n^{2} $
Þ $ r_{n}=n^{2}a_{0} $ $ (\because r_{1}=a_{0}) $
