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If the electron in a hydrogen atom jumps...

If the electron in a hydrogen atom jumps from an orbit with level `n_(1)=2` to an orbit with level `n_(2)=1` the emitted radiation has a wavelength given by

A

`lambda=5/(3R)`

B

`lambda=4/(3R)`

C

`lambda=R/4`

D

`lambda=(3R)/4`

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