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Question

The angular momentum of an electron in the 2nd excited state ofa Helium ion (He+) is:

A
h2π
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B
2h2π
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C
3h2π
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D
4h2π
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Solution

The correct option is C 3h2π
Angular momentum of an electron is given by nh2π, where n is the energy orbit.
For second excited state n=3
Therefore, L=3h2π

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