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Energy Levels

The diagram s...

Question

The diagram shown the energy levels for an electron in a certain atom. Which transition shown represents the emission of a photon with the most energy?

A

III

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B

IV

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C

I

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D

II

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Solution

The correct option is A III
A photon is emitted when an electron jumps from a higher energy level to a lower energy level. Moreover, the energy difference is maximum when an electron jumps from n=2 to n=1 $(E_{n} = - 13.6 \frac{Z^{2}}{n^{2}})$ .

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