Atomic Structure Question 47

Question: The radius of which of the following orbit is same as that of the first Bohr’s orbit of hydrogen atom

Options:

A) He+(n=2)

B) Li2+(n=2)

C) Li2+(n=3)

D) Be3+(n=2)

Show Answer

Answer:

Correct Answer: D

Solution:

rH=0.529n2z\AA For hydrogen ; n=1 and z=1 therefore rH=0.529\AA For Be3+:,Z=4 and n=2 Therefore rBe3+=0.529×224=0.529\AA .



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