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How much energy is needed to excite an e...

How much energy is needed to excite an electron in H-atom from ground state to first excited state?

A

`-13.6` eV

B

`-10.2` eV

C

`+10.2` eV

D

`+13.6` eV

Text Solution

Verified by Experts

The correct Answer is:
C
`E_(1) = -13.6 eV, E_(2) = -(13.6)/(2^(2)) = -3.4 eV`
Required excitation energy = `E_(2) - E_(1) = -3.4 + 13.6 = + 10.2 eV`
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FULL MARKS-ATOMIC AND NUCLEAR PHYSICS-Additional question (Multiple Choice Question)
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