An electron makes transition inside a hydrogen atom. The orbital angular momentum of the electron may change by

Options

A. `h`
B. `h/(3pi)`
C. `h/(2pi)`
D. `h/(4pi)`

Answer

C

Explanation

let electron jump from `n_(1)ton_(2)`
So `DeltaL=(n_(2)-n_(1))h/(2pi)`
(According to Bohr's quantisation rule)
Since `n_(1)` and `n_(2)` are integers `(n_(1),n_(2)gt1`) So, `n_(2)-n_(1)` is also an integral value and hence `DeltaL` must be an integral multiple of `h/(2pi)`