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In a model of the hydrogen atom, the energy levels Wn are...

In a model of the hydrogen atom, the energy levels Wn are given by the formula Wn = -\(\frac{R}{n^2}\), where n is an integer and R is a constant. Determine the energy released in the transition from n = 3 to n = 2.

A.

\(\frac{R}{5}\)

B.

-\(\frac{R}{4}\)

C.

\(\frac{5R}{36}\)

D.

\(\frac{-5R}{36}\)

Correct answer is C

Given that W = -\(\frac{R}{n^2}\)

from n = 3 to n = 2.

-\(\frac{R}{3^2}\) - (-\(\frac{R}{2^2}\))

-\(\frac{R}{9}\) - (-\(\frac{R}{4}\))

-\(\frac{R}{9}\) + \(\frac{R}{4}\);

with LCM 36

\(\frac{-4R  + 9R}{36}\)

= \(\frac{5R}{36}\)