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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

`12.1`eV

B

`36.3`eV

C

`108.8`eV

D

`122.4`eV

Text Solution

Verified by Experts

The correct Answer is:
C
`E_(n) = -13.6 ((Z^(2))/(n^(2)))eV`
`E_(1)=(-13.6 (3)^(2))/(1^(2))and E_(3) = (-13.6(3)^(2))/(3^(2))`
`DeltaE = E_(3) -E_(1)=108.8eV `.
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