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

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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} $



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