Which of the following electron transition results in the emission of energy?

Assessment: WAEC SSCE - Chemistry - 2004 (Objective) Subject: Chemistry

Question 1 Report

Which of the following electron transition results in the emission of energy?
Answer Details
When an electron transitions from a higher energy level to a lower energy level, it releases energy in the form of electromagnetic radiation. The energy of the emitted radiation corresponds to the difference in energy between the two levels involved in the transition. Based on this information, the correct answer to the question is the electron transition from the 3p orbital to the 3s orbital, as this involves a higher energy level (3p) transitioning to a lower energy level (3s), resulting in the emission of energy. The other options involve transitions from lower to higher energy levels, and therefore do not result in the emission of energy.

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