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What is the energy in eV requried to exc...

What is the energy in eV requried to excite the electron from n=1 to n=2 state in hydrogen atom? (n=principal quantum number)

A

13.6

B

3.4

C

17

D

10.2

Text Solution

Verified by Experts

The correct Answer is:
D
`DeltaE=E_(2)-E_(1)`
`=(-(13.6)/(2^(2)))-(-(13.6)/(1^(2)))`
`=13.6(1-(1)/(4))=(3)/(4)xx13.6=10.2eV`.
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