Atoms And Nuclei Question 91

Question: The time of revolution of an electron around a nucleus of charge Ze in nth Bohr orbit is directly proportional to [MP PET 2003]

Options:

A) n

B) n3Z2

C) n2Z

D) Zn

Show Answer

Answer:

Correct Answer: B

Solution:

T=2πrv ; r = radius of nth orbit =n2h2πmZe2

v = speed of e in nth orbit =ze22ε0nh \ T=4ε02n3h3mZ2e4
Þ Tn3Z2



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