Atoms And Nuclei Question 60
Question: According to Bohr’s model, the radius of the second orbit of helium atom is [Bihar MEE 1995]
Options:
A) 0.53 Å
B) 1.06 Å
C) 2.12 Å
D) 0.265 Å
Show Answer
Answer:
Correct Answer: B
Solution:
$ r=\frac{n^{2}}{Z}(r_{0}) $ ; Þ $ {r_{(n=2)}}=\frac{{{(2)}^{2}}}{2}\times 0.53=1.06,{\AA} $
