Atoms And Nuclei Question 415
Question: According to Bohr’s model, the radius of the second orbit of helium atom is
Options:
A) 0.53 $ \overset{o}{\mathop{A}}, $
B) 1.06 $ \overset{o}{\mathop{A}}, $
C) 2.12 $ \overset{o}{\mathop{A}}, $
D) 0.265 $ \overset{o}{\mathop{A}}, $
Show Answer
Answer:
Correct Answer: B
Solution:
$ r=\frac{n^{2}}{Z}(r_{0}) $ ;
Þ
$ \Rightarrow {r_{(n=2)}}=\frac{{{(2)}^{2}}}{2}\times 0.53=1.06,\overset{{}^\circ}{\mathop{A}}, $
