What is the energy of a photon emitted when an electron transitions from n=4 to n=2? - ATOMS AND NUCLEI Quiz | GKFix.in

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Question

What is the energy of a photon emitted when an electron transitions from n=4 to n=2?

A. 2.55 eV
B. 1.89 eV
C. 0.97 eV
D. 3.4 eV