[ahawk1]

A hypothetical atom has four allowed energy levels. As shown in the accompanying diagram, the emission spectrum of this atom will contain six transitions, labelled A - F. Transitions A,D, and F occur at wavelengths of 676.7 nm, 491.2 nm, and 337.7 nm respectively. What is the wavelength of light emitted in transition B?(WARNING -- The relative energies of the transitions may not be shown correctly in the diagram.)


I dont understand where the energies are coming from on this chart. Can neone help me understand this question better?

[sjb]

Are you aware of things like the photoelectric effect, and the correlation between frequency and wavelength for electromagnetic radiation?

[ARGOS++]

Dear ahawk1;

For how translation from wavelength into energy and vice versa can be done you may read/study on the following FAQ page under the question: "Why Einstein meets Beer-Lambert?" on:

"Spectroscopy FAQ"

With its help you can convert the given wavelength into energy; calculate the difference and convert it back to the resulting wavelength.

I hope to have been of help to you for understanding.
Good Luck!
                    ARGOS⁺⁺