Question

# What should be the angular momentum of an electron in Bohr's hydrogen atom where energy is $$-0.544$$.

A
hπ
B
3h2π
C
5h2π
D
2h2π

Solution

## The correct option is A $$\displaystyle\frac{h}{\pi}$$Angular momentum of nth orbit R given by $$L_{n} = \dfrac{nh}{2\pi }$$The angular momentum of an electron when energy is - 0.544, $$L_{2} = \dfrac{2h}{2\pi }$$ $$L = \dfrac{h}{\pi}$$Physics

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