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Energy required for the electron excitat...

Energy required for the electron excitation in `Li^(++)` from the first to the third Bohr orbit is:

A

`108.8 eV`

B

`122.4 eV`

C

`12.1 eV`

D

`36.3 eV`

Text Solution

Verified by Experts

The correct Answer is:
A
Required energy `=13.6 (Z)^(2) [1/n_(1)^(2)-1/n_(2)^(2)] eV`
`=13.6 (3)^(2) [1/1^(2)-1/3^(2)]=108.8 eV`
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