First slide

Bohr Model of the Hydrogen atom.

Question

Angular momentum of an electron in a hydrogen atom is proportional to

Easy

A

$\frac{1}{\sqrt{r}}$
B

$\frac{1}{r}$
C

$\sqrt{r}$
D

$r^{2}$

Solution

$L = m v r = \frac{n h}{2 π}$
$r \propto n^{2}$
$L \propto \sqrt{r}$
$n \propto \sqrt{r}$

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