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Physics, 05.08.2019 20:20 danaya111

When an excited electron falls from n = 3 to n = 2, a red radiation in the balmer series emitted. what is the frequency of this photon?
a. 6.63 x 10-34 hz
b. 2.19 x 1016 hz
c. 5.28 x 1011 hz
d. 4.57 x 1014 hz

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