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Question
What is the energy of the electron in the first orbit of a hydrogen atom?
Options
\[E_{1}=0\,\mathrm{eV}\]
\[E_{1}=-13.6\,\mathrm{eV}\]
\[E_{1}=-3.40\,\mathrm{eV}\]
\[E_{1}=-1.51\,\mathrm{eV}\]
MCQ
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Solution
The first orbit is the ground state of hydrogen. The electron's energy in this orbit is \[E_{1}=-13.6\,\mathrm{eV}\].
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