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The ground state energy of hydrogen atom...

The ground state energy of hydrogen atom is –13.6 eV. What are the kinetic and potential energies of the electron in this state?

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In ground state (total energy of electron) E = - 13.6 eV
`rArr` We know that kinetic energy of electron
`:. K=-E`
`:. K=-(-123.6)eV`
`:.K=13.6eV`
and potenetial energy of electron
U=-2 (kinetic energy)
`:.U=-2K`
`:.U=-2(13.6)eV :. U=-27.eV`
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