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
• B. IV
• C. I
• D. II

Answer 1

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 $(E_n=-13.6\frac{Z^2}{n^2})$.