Question

The angular momentum of an electron in a hydrogen atom is proportional to

• A. $\frac{1}{\sqrt{r}}$
• B. $\frac{1}{r}$
• C. $\sqrt{r}$
• D. $r^2$

Answer 1

Answer: (C)

$L=mvr=\frac{nh}{2\pi }$
But $r=0.529\frac{n^2}{Z}$
$L\propto n\propto \sqrt{r}$