NCERT Class XII Chapter
Atoms
Questions With Solutions

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Question : 5
Total: 18
The ground state energy of hydrogen atom is –13.6 eV. What are the kinetic and potential energies of the electron in this state?
Solution:  
Total energy, E = –13.6 eV
K.E. = – E = – (–13.6) = 13.6 eV
P.E. = – 2K.E. = – 2 × 13.6 = – 27.2 eV.
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