Question

Quick question. The smallest possible value of angular momentum for an electron in the hydrogen atom, in appropriate units, is –

• A.
• B.
• C.
• D.

Answer 1

The correct option is A

Simple one, this. The only allowed angular momentum values for an electron in Bohr's model are $L=\frac{nh}{2\pi }$, where n takes values in the range [1, $\infty$ ). Thus the smallest value of angular momentum L will correspond to n=1. Therefore -
$L_{minimum}=\frac{h}{2\pi }$,
Corresponding to n=1.