The anomalous ground-state electronic configuration of Chromium () is . This exception to the Aufbau principle is primarily driven by:

Question

The anomalous ground-state electronic configuration of Chromium ($Cr, Z=24$) is $[Ar] 3d^5 4s^1$. This exception to the Aufbau principle is primarily driven by:

Prashant Kotian · Accepted Answer

Correct answer: A. Configurations that are exactly half-filled () possess maximum spatial symmetry and the maximum possible number of parallel spin exchanges, releasing exchange energy that strongly stabilizes the atom.

💡 Solution & Explanation

Practice 22,000+ questions like this