A student observes an element with an electron configuration deviating from the Aufbau principle. Which element shows a half-filled d-orbital and one less electron in the s-orbital?
Q1. A student observes an element with an electron configuration deviating from the Aufbau principle. Which element shows a half-filled d-orbital and one less electron in the s-orbital?
Answer: Chromium
Explanation: Chromium fills the 3d orbital with 5 electrons (half-filled) and 4s with 1 for stability. Manganese and Iron follow normal filling.