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 Ao,

B) 1.06 Ao,

C) 2.12 Ao,

D) 0.265 Ao,

Show Answer

Answer:

Correct Answer: B

Solution:

r=n2Z(r0) ; Þ
r(n=2)=(2)22×0.53=1.06,A,



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