Chemistry Coordination Compounds Class 12th Chemistry

Low spin complex of $d^{4}$ cation in an octahedral field will have the following energy (P is pairing energy)

Option 1 - <p><span class="mathml" contenteditable="false"> <math> <mo>-</mo> <mn>2.4</mn> <msub> <mrow> <mrow> <mo>∆</mo> </mrow> </mrow> <mrow> <mrow> <mn>0</mn> </mrow> </mrow> </msub> <mo>+</mo> <mi>P</mi> </math> </span></p>

Option 2 - <p><span class="mathml" contenteditable="false"> <math> <mo>-</mo> <mn>01.2</mn> <msub> <mrow> <mrow> <mo>∆</mo> </mrow> </mrow> <mrow> <mrow> <mn>0</mn> </mrow> </mrow> </msub> <mo>+</mo> <mn>2</mn> <mi>P</mi> </math> </span></p>

Option 3 - <p><sup><span class="mathml" contenteditable="false"> <math> <mo>-</mo> <mn>1.6</mn> <msub> <mrow> <mrow> <mo>∆</mo> </mrow> </mrow> <mrow> <mrow> <mn>0</mn> </mrow> </mrow> </msub> <mo>+</mo> <mi>P</mi> </math> </span></sup></p>

Option 4 - <p><span class="mathml" contenteditable="false"> <math> <mo>-</mo> <mn>0.6</mn> <msub> <mrow> <mrow> <mo>∆</mo> </mrow> </mrow> <mrow> <mrow> <mn>0</mn> </mrow> </mrow> </msub> </math> </span></p>

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Vishal Baghel | Contributor-Level 10

4 months ago

Correct Option - 3

Detailed Solution:

Energy of the complex $\frac{}{}_{}$ $= - \frac{2}{5} * 4 ?_{0} + P$

For low spin $d^{4}$ $^{}$ cation

$= 1.6 ?_{0} + P$

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