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Question

The electron in a hydrogen atom at rest makes a transition from n=2 energy state to the n=1 ground state. Find the energy (eV) of the emitted photon.

A
5.8 eV
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B
8.3 eV
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C
10.2 eV
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D
12.7 eV
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Solution

The correct option is C 10.2 eV
E=13.6(1122)=10.2 eV

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