1.

An electron makes a transition from n = 5 state to n = 2 state in the hydrogen atom. What is the frequency of the emitted photon?

A. 4.9 X 10<sup>14</sup> Hz
B. 5.9 X 10<sup>14</sup> Hz
C. 6.9 X 10<sup>14</sup> Hz
D. 7.9 X 10<sup>14</sup> Hz
Answer» D. 7.9 X 10<sup>14</sup> Hz


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