Question

The angular momentum of an electron present in the excited state of Hydrogen is $\frac{1.5h}{\pi }$. The electron is present in:

• A. third orbit
• B. second orbit
• C. fourth orbit
• D. fifth orbit

Answer 1

The correct option is A third orbit

$Angularmomentum=\frac{nh}{2\pi }$
$\frac{nh}{2\pi }=\frac{3h}{2\pi }$
$\Rightarrow n=3$
Therefore, the electron is present in third orbit.