Chemistry Coordination Compounds Class 12th Chemistry NCERT Exemplar Solutions Class 12th Chapter Nine Chemistry

The metal complex that is diamagnetic is (Atomic number; Fe, 26; Cu, 29)

Option 1 - <p><span class="mathml" contenteditable="false"> <math> <mrow> <msub> <mrow> <mi>K</mi> </mrow> <mrow> <mn>3</mn> </mrow> </msub> <mrow> <mo>[</mo> <mrow> <mi>C</mi> <mi>u</mi> <msub> <mrow> <mrow> <mo>(</mo> <mrow> <mi>C</mi> <mi>N</mi> </mrow> <mo>)</mo> </mrow> </mrow> <mrow> <mn>4</mn> </mrow> </msub> </mrow> <mo>]</mo> </mrow> </mrow> </math> </span></p>

Option 2 - <p><span class="mathml" contenteditable="false"> <math> <mrow> <msub> <mrow> <mi>K</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mrow> <mo>[</mo> <mrow> <mi>C</mi> <mi>u</mi> <msub> <mrow> <mrow> <mo>(</mo> <mrow> <mi>C</mi> <mi>N</mi> </mrow> <mo>)</mo> </mrow> </mrow> <mrow> <mn>4</mn> </mrow> </msub> </mrow> <mo>]</mo> </mrow> </mrow> </math> </span></p>

Option 3 - <p><span class="mathml" contenteditable="false"> <math> <mrow> <msub> <mrow> <mi>K</mi> </mrow> <mrow> <mn>3</mn> </mrow> </msub> <mrow> <mo>[</mo> <mrow> <mi>F</mi> <mi>e</mi> <msub> <mrow> <mrow> <mo>(</mo> <mrow> <mi>C</mi> <mi>N</mi> </mrow> <mo>)</mo> </mrow> </mrow> <mrow> <mn>4</mn> </mrow> </msub> </mrow> <mo>]</mo> </mrow> </mrow> </math> </span></p>

Option 4 - <p><span class="mathml" contenteditable="false"> <math> <mrow> <msub> <mrow> <mi>K</mi> </mrow> <mrow> <mn>4</mn> </mrow> </msub> <mrow> <mo>[</mo> <mrow> <mi>F</mi> <mi>e</mi> <mi>C</mi> <msub> <mrow> <mi>l</mi> </mrow> <mrow> <mn>6</mn> </mrow> </msub> </mrow> <mo>]</mo> </mrow> </mrow> </math> </span></p>

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Alok Kumar Singh | Contributor-Level 10

8 months ago

Correct Option - 1

Detailed Solution:

K₂ [Cu (CN)₄]

Oxidation number of Cu is +1

Cu⁺ = [Ar]3d¹⁰ ® Diamagnetic

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