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The ratio of energy of the electron in g...

The ratio of energy of the electron in group state of the hydrogen to electron in first excited state of `He^+` is.

A

`1 : 4`

B

`1 : 1`

C

`1 : 8`

D

`1 : 16`

Text Solution

Verified by Experts

The correct Answer is:
B
(b) `E_n prop (-Z^2)/(n^2)`
`z_1 = 1` `n_1 = 1`
`z_2 = 1` `n_2 = 2`
`(E_1(H))/(E_2(He^(+))) = (1)/(1) = 1 : 1`.
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