Which of the following energy diagrams represents the electronic state of butadiene after absorption of radiation?

Question

Quizplus · Accepted Answer

After absorption of radiation, butadiene would be in an excited state. This means that one or more of its electrons have moved to a higher energy level. Looking at the energy diagrams, we can see that option B shows an increase in energy level for two of the electrons in butadiene. Options A and D show a decrease in energy level, which is not consistent with an excited electronic state. Option C shows an increase in energy level for only one electron, which is also not consistent with an excited electronic state of butadiene.

Which of the Following Energy Diagrams Represents the Electronic State