Question

The angular momentum $(L)$ of an electron moving in a stable orbit around nucleus is

• A. half integral multiple of $ \frac{h}{2\pi } $
• B. integral multiple of $h$
• C. integral multiple of $ \frac{h}{2\pi } $
• D. half integral multiple of $h$

Answer 1

Answer: (C)

For an electron to remain orbiting around the nucleus, the.
angular momentum $(L)$ should be an integral multiple of $h / 2 \pi$.
ie, mvr $=\frac{n h}{2 \pi}$
where $n=$ principle quantum number of electron, and $h=$ Planck's constant