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Question: Answered & Verified by Expert
The minimum magnetic dipole moment of electron in hydrogen atom is
PhysicsMagnetic Effects of CurrentAIIMSAIIMS 2012
Options:
  • A $\frac{e h}{2 \pi m}$
  • B $\frac{e h}{4 \pi m}$
  • C $\frac{e h}{ \pi m}$
  • D $0$
Solution:
2359 Upvotes Verified Answer
The correct answer is: $\frac{e h}{4 \pi m}$
Magnetic dipole moment of electron in an atom is given as
$M=\frac{n e h}{๑ \pi m}=n \mu_B$
where, $n=$ number of orbit
$\mu_B=$ Bohr Magneton
For minimum dipole moment, $n=1$
$\therefore \quad M=\frac{e h}{@ \pi m}$

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