In the Bohr model an electron moves in a circular orbit around the proton. Considering the orbiting electron to be a circular current loop, the magnetic moment of the hydrogen atom, when the electron is in $n ^ { \text {th} }$ excited state, is : (1) $\left( \frac { e } { 2 m } \frac { n ^ { 2 } h } { 2 \pi } \right)$ (2) $\left( \frac { e } { m } \right) \frac { n h } { 2 \pi }$ (3) $\left( \frac { e } { 2 m } \right) \frac { n h } { 2 \pi }$ (4) $\left( \frac { e } { m } \right) \frac { n ^ { 2 } h } { 2 \pi }$
In the Bohr model an electron moves in a circular orbit around the proton. Considering the orbiting electron to be a circular current loop, the magnetic moment of the hydrogen atom, when the electron is in $n ^ { \text {th} }$ excited state, is :\\
(1) $\left( \frac { e } { 2 m } \frac { n ^ { 2 } h } { 2 \pi } \right)$\\
(2) $\left( \frac { e } { m } \right) \frac { n h } { 2 \pi }$\\
(3) $\left( \frac { e } { 2 m } \right) \frac { n h } { 2 \pi }$\\
(4) $\left( \frac { e } { m } \right) \frac { n ^ { 2 } h } { 2 \pi }$