SAT Subject Physics Practice Question 381: Answer and Explanation
2. Question below relates to the following chart, which is a partial energy level diagram for the hydrogen electron.
The question relates to a hydrogen electron located at E-3. What is the absorbed energy when theelectron jumps to E-5 from E-3?
Correct Answer: B
The correct answer is (B). The solution is found again by using Bohr's equation, ΔE = E3 - E5. The calculation yields -.966 eV. The negative sign tells us the electron absorbs energy as it moves further from the nucleus.