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The frequency of 1st line Balmer series ...

The frequency of 1st line Balmer series in `H_(2)` atom is `v_(0)`. The frequency of line emitted by single ionised He atom is

A

`2f_(0)`

B

`4f_(0)`

C

`f_(0)//2`

D

`f_(0)//4`

Text Solution

Verified by Experts

The correct Answer is:
B
`f prop Z^(2) rArr (f_(H_(2)))/(f_(He)) = ((1)^(2))/((2)^(2))= (1)/(4)`
`f_(He) = 4f_(H_(2)) = 4 f_(0)`
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