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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` 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`

Text Solution

Verified by Experts

The correct Answer is:
B
Since `1/lambda=R(1/n_(f)^(2)-1/n_(i)^(2))=R(1/1^(2)-1/2^(2))`
`=R(1-1/4)=R(3/4) therefore lambda=4/(3R).`
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