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Question

Moment of momentum of an electron revolving in second Bohr orbit of hydrogen is

A
2πh
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B
h/2π
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C
h/π
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D
2h/3π
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Solution

The correct option is C h/π
Moment of momentum (or angular momentum) of electron revolving in nth orbit Jn=nh2π
Moment of momentum of electron in n=2 orbit, J2=2h2π
J2=hπ

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