1.

An electron makes a transition from orbit n = 4 to the orbit n = 2 of a hydrogen atom. The wave number of the emitted radiations (R = Rydberg's constant) will be

A. \[\frac{16}{3R}\]
B. \[\frac{2R}{16}\]
C. \[\frac{3R}{16}\]
D. \[\frac{4R}{16}\]
Answer» D. \[\frac{4R}{16}\]


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