Chemistryhard · Past Paper
Which element shows an exceptional electronic configuration due to the stability of half-filled subshells?
ACalcium
BChromium
CIron
DZinc
✓ Correct Answer: B — Chromium
Chromium has a configuration of [Ar] 4s1 3d5 instead of 4s2 3d4 to achieve a stable half-filled d-subshell.
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