What is the energy of a photon emitted from an electron in

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What is the energy of a photon emitted from an electron in a hydrogen atom when it jumps from the n = 7 to the n = 3 level?

1. 7.9093 × 10-20 J

2. 4.1524 × 10-19 J

3. 2.1800 × 10-20 J

4. 1.97728 × 10-19 J

Reference no: EM13386614

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