Chemistry · Structure of atom
हिन्दीWhat is the correct ground-state valence electronic configuration of chromium (\( \text{Cr}, Z = 24 \)) exhibiting exceptional stability?
Correct answer · Option B
\( [Ar] 3d^5 4s^1 \)
Explanation
Half-filled and fully filled subshells possess extra stability due to symmetry and higher exchange energy, leading to \( 3d^5 4s^1 \) configuration for \( \text{Cr} \).