# The angular momentum of an electron in a third orbit is equal to?

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What is the angular momentum of an electron in the third orbit of an atom?

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We know that,

Angular momentum of an electron in the nth Bohr orbit of hydrogen atom $L = \frac{nh}{2\pi}$

For n = 3; h = 6.6 x 10-34 Js

$L = \frac{3h}{2\pi}$

$L = \frac{3 \times 6.6 \times 10^-34}{2 \times 3.14}$ = 3.15 x 10-34 Js