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The total energy of eletcron in the grou...

The total energy of eletcron in the ground state of hydrogen atom is `-13.6 eV`. The kinetic enegry of an electron in the first excited state is

A

1.7 ev

B

3.4 eV

C

6.8 eV

D

13.6 eV

Text Solution

Verified by Experts

The correct Answer is:
B
Total energy in first excited state `=-(13.4)/(4)=-3.4 eV`
K.E. in first excited state =- total energy in that state =- (-3.4)=3.4eV
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