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In a hydrogen atom, the electron revolvi...

In a hydrogen atom, the electron revolving in the fourth orbit, has angular momentum equal to

A

h

B

`(h)/(pi)`

C

`(4h)/(pi)`

D

`(2h)/(pi)`

Text Solution

Verified by Experts

The correct Answer is:
D
Angular momentum of an electron is an integral multiple of `(h)/(2pi)`
According to Bohr atom model,
Angular momentum of an electron mvr = `(nh)/(2pi)`
`n = 4^(th)` orbit = `(4h)/(2pi)`
mvr = `(2h)/(pi)`
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