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Physics Modern Physics Level: High School

Bohr’s Atomic Model

What is the energy difference between an electron in n = 3 state and n = 5 state in hydrogen ? If the electron makes a transition from n = 5 to n = 3 this energy difference is carried away by a single photon . Calculate the wavelength expressed in nm , and the frequency of this emitted photon . In what part of the electromagnetic spectrum does it lie ?