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InterviewSolution
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The total energy of an electron in the first excited state of the hydrogen atom is about -3.4 eV. Which of the answers above would change if the choice of the zero of potential energy is changed? |
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Answer» We know kinetic energy of electron `=(Kze^(2))/(2r)` and P.E of electron `=(-Kze^(2))/(r)` P.E.=-2 (kinetic energy) In this calculation electric potential and hence potential energy is zero at infinity. Total energy = PE + KE = -2KE + KE = -KE If zero of potential energy is changed, KE does not change and continues to be + 3.4 eV. However, the P.E. and total energy of the state would change with the choice of zero of potential energy. |
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