What will be the electron’s potential energy in eV in first orbit of – InterviewSolution

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1.	What will be the electron’s potential energy in eV in first orbit of hydrogen atom?
Answer» Potential energy U_n = \(-\frac{K Z e^{2}}{r_{n}}\) Total energy E_n = \(-\frac{1}{2} \frac{K Z e^{2}}{r_{n}}\) E_n = \(\frac{1}{2}\) (U_n) U_n = 2E_n Total energy in first orbit E_n = -13.6 eV U_n = 2(-13.6)eV U_n = -27.2 eV

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