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The ratio of the wavelengths for 2 rarr ...

The ratio of the wavelengths for `2 rarr 1` transition in `Li^(++), He^(+)` and `H` is

A

`1:2:3`

B

`1/9:1/4:1/1`

C

`1:4:1`

D

`3:2:1`

Text Solution

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The correct Answer is:
B
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