Q. The electronic configuration with maximum exchange energy will be
A) $3d_{xy}^{1}3d_{y\mathcal{z}}^{1}{3d}_{\mathcal{z}x}^{1}4s^{1}$
B) $3d_{xy}^{1}3d_{y\mathcal{z}}^{1}{3d}_{\mathcal{z}x}^{1}3d_{x^{2} - y^{2}}^{1}3d_{\mathcal{z}^{2}}^{1}4s^{1}$
C) $3d_{xy}^{2}3d_{y\mathcal{z}}^{2}{3d}_{\mathcal{z}x}^{2}3d_{x^{2} - y^{2}}^{2}3d_{\mathcal{z}^{2}}^{1}4s^{1}$
D) $3d_{xy}^{2}3d_{y\mathcal{z}}^{2}{3d}_{\mathcal{z}x}^{2}3d_{x^{2} - y^{2}}^{2}3d_{\mathcal{z}^{2}}^{2}4s^{1}$
Explanation
(d)
The energy of electrons in the same orbital is the same. For 3$d$ orbitals, $3d_{xy},3d_{y\mathcal{z}},3d_{\mathcal{z}x},3d_{\mathcal{z}_{2}^{2}\ },3d_{x^{2} - y^{2},}\ \$are at the same level of energy, irrespective of their orientation. The electronic configuration $3d_{xy}^{2},3d_{y\mathcal{z}}^{2},3d_{\mathcal{z}x}^{2},3d_{x^{2} - y^{2}}^{2},3d_{\mathcal{z}^{2}}^{2},4s^{1}$ has maximum exchange energy
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.