Question

The minimum magnetic dipole moment of electron in hydrogen atom is

• A. $\frac{eh}{2\pi m}$
• B. $\frac{eh}{4\pi m}$
• C. $\frac{eh}{\pi m}$
• D. 0

Answer 1

Answer: (B)

Magnetic dipole moment of electron in an atom is given as
$M=\frac{n eh}{4 \pi m}=n\mu_{ B }$
where, n = number of orbit
$\quad\quad\mu_{B}=$Bohr Magneton
For minimum dipole moment, $n = 1$
$\therefore M=\frac{eh}{4 \pi m}$