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Energy of an electron in hydrogen atom i...

Energy of an electron in hydrogen atom in ground state is –13.6 eV. What is the energy of the electron in the third excited state?

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`E_1 =- 13.6 =eV `
` E_3 = ( -13.6 )/( n^2) " where " n=3`
`E_3 = ( -13.6 )/(9) = 1.511 eV `
energy of the electron in the third excited state = 1.511 eV .
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