Question

In the lowest energy level of hydrogen atom, the electron has the angular momentum

• A. $\pi /h$
• B. $h/\pi$
• C. $h/2\pi$
• D. $2\pi /h$

Answer 1

Answer: (C)

Angular momentum of the electron for nth level $=\frac{nh}{2\pi }$
For lowest energy level of $H_2,n=1$
$\therefore$ angular momentum $=\frac{h}{2\pi }$