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The energy of an electron in the 3s orbi...

The energy of an electron in the 3s orbital (excited state) of H - atom is

A

`-1.5 eV`

B

`-13.6 eV`

C

`-3.4 eV`

D

`-4.53 eV`

Text Solution

Verified by Experts

The correct Answer is:
A
`E_n = -(13.6)/(n^2) eV`
For `3s -` orbital , `n = 3`
`E_n = -(13.6)/(3^2) = -1.51 eV` .
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