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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

`2v_(0)`

B

`4v_(0)`

C

`v_(0)//2`

D

`v_(0)//4`

Text Solution

Verified by Experts

The correct Answer is:
B
`v prop Z^(2) rArr (v_(H_(2)))/(v_(H_(e))) = ((1)/(2))^(2) = (1)/(4)`
`rArr v_(H_(e)) = 4v_(H_(2)) = 4v_(0)`
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