The magntic moment `(mu)` of a revolving electron around the mucleaus varies with principle quantum number `n` as

Options

A. both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B. both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. Assertion is true but the Reason is false.
D. both Assertion and Reason are false.

Answer

D

Explanation

Magnetic moment of revolving electron around the nucleus is,
`M=IA=e/Tpir^2=(eomega)/(2pi)pir^2=(evr)/(2)`
But `vprop1/n` and `rpropn^2`
Therefore, `Mprop(e(1//n)xxn^2)/(2)` or `Mpropn`
The Assertion is wrong. Here Reason though correct but cannot explain the Assertion.