CUET Preparation Today
Correct electronic configuration of Cu and Cr are ____. |
$3d^9 4s^2$ and $3d^44s^2$ respectively $3d^{10} 4s^1$ and $3d^5 4s^1$ respectively $3d^5 4s^1$ and $3d^{10} 4s^1$ respectively $3d^4 4s^2$ and $3d^9 4s^2$ respectively |
$3d^{10} 4s^1$ and $3d^5 4s^1$ respectively |
The correct answer is Option (2) → $3d^{10} 4s^1$ and $3d^5 4s^1$ respectively The correct electronic configurations of Cr and Cu are exceptions to the general filling order due to stability of half-filled and fully-filled d-orbitals.
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