Chemistry Coordination Compounds Chemistry Class 12th Coordination Compounds

Amongst FeCl₃.3H₂O, K₃ $[F e {(C N)}_{6}] a n d [C o {(N H_{3})}_{6}] C l_{3},$ the spin- only magnetic moment value of the inner-orbital complex that absorbs light at shortest wavelength is ________ B.M [nearest integer]

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Vishal Baghel | Contributor-Level 10

2 months ago

FeCl₃. 3H₂O i.e. [Fe(H₂O)₃], K₃[Fe(CN]₆ and [Co(NH₃)₆]Cl₃; the last two complex are inner-orbital complex due to presence of strong ligand.

$∴ Δ_{0} o f K_{3} [F e {(C N)}_{6}] > Δ_{0} o f [C o {(N H_{3})}_{6}] C l_{3}$

Because CN^- is strong ligand

$∴ Δ_{0} \propto \frac{1}{λ}$

More $Δ_{0}$ smaller value of absorbed $λ$ .

$K_{3} [F e {(C N)}_{6}] \to F e^{+ 3} = 4 s^{0} 3 d^{5} 4 p^{0}$

$∴ u . e = 1$

$∴ μ = \sqrt[]{1 \times (1 + 2)} B . M = \sqrt[]{3} B . M$

= 1.732 B.M

$\approx$ 2

FeCl3. 3H2O i.e. [Fe(H2O)3], K3[Fe(CN]6 and [Co(NH3)6]Cl3; the last two complex are inner-orbital complex due to presence of strong ligand. <math> <mrow> <mo>∴</mo> <msub> <mrow> <mi>Δ</mi> </mrow> <mrow> <mn>0</mn> </mrow> </msub> <mtext> </mtext> <mtext> </mtext> <mi>o</mi> <mi>f</mi> <mtext> </mtext> <mtext> </mtext> <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>6</mn> </mrow> </msub> </mrow> <mo>]</mo> </mrow> <mo>></mo> <msub> <mrow> <mi>Δ</mi> </mrow> <mrow> <mn>0</mn> </mrow> </msub> <mi>o</mi> <mi>f</mi> <mtext> </mtext> <mtext> </mtext> <mrow> <mo>[</mo> <mrow> <mi>C</mi> <mi>o</mi> <msub> <mrow> <mrow> <mo>(</mo> <mrow> <mi>N</mi> <msub> <mrow> <mi>H</mi> </mrow> <mrow> <mn>3</mn> </mrow> </msub> </mrow> <mo>)</mo> </mrow> </mrow> <mrow> <mn>6</mn> </mrow> </msub> </mrow> <mo>]</mo> </mrow> <mi>C</mi> <msub> <mrow> <mi>l</mi> </mrow> <mrow> <mn>3</mn> </mrow> </msub> </mrow> </math>       <img >       Because CN- is strong ligand <math> <mrow> <mo>∴</mo> <msub> <mrow> <mi>Δ</mi> </mrow> <mrow> <mn>0</mn> </mrow> </msub> <mo>∝</mo> <mfrac> <mrow> <mn>1</mn> </mrow> <mrow> <mi>λ</mi> </mrow> </mfrac> </mrow> </math>         More <math> <mrow> <msub> <mrow> <mi>Δ</mi> </mrow> <mrow> <mn>0</mn> </mrow> </msub> </mrow> </math>  smaller value of absorbed <math> <mrow> <mi>λ</mi> </mrow> </math> . <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>6</mn> </mrow> </msub> </mrow> <mo>]</mo> </mrow> <mo>→</mo> <mi>F</mi> <msup> <mrow> <mi>e</mi> </mrow> <mrow> <mo>+</mo> <mn>3</mn> </mrow> </msup> <mo>=</mo> <mn>4</mn> <msup> <mrow> <mi>s</mi> </mrow> <mrow> <mn>0</mn> </mrow> </msup> <mn>3</mn> <msup> <mrow> <mi>d</mi> </mrow> <mrow> <mn>5</mn> </mrow> </msup> <mn>4</mn> <msup> <mrow> <mi>p</mi> </mrow> <mrow> <mn>0</mn> </mrow> </msup> </mrow> </math>        <math> <mrow> <mo>∴</mo> <mi>u</mi> <mo>.</mo> <mi>e</mi> <mo>=</mo> <mn>1</mn> </mrow> </math>       <math> <mrow> <mo>∴</mo> <mi>μ</mi> <mo>=</mo> <mroot> <mrow> <mn>1</mn> <mo>×</mo> <mrow> <mo>(</mo> <mrow> <mn>1</mn> <mo>+</mo> <mn>2</mn> </mrow> <mo>)</mo> </mrow> </mrow> <mrow></mrow> </mroot> <mi>B</mi> <mo>.</mo> <mi>M</mi> <mo>=</mo> <mroot> <mrow> <mn>3</mn> </mrow> <mrow></mrow> </mroot> <mi>B</mi> <mo>.</mo> <mi>M</mi> </mrow> </math>        = 1.732 B.M <math> <mrow> <mo>≈</mo> </mrow> </math> 2

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Amongst FeCl₃.3H₂O, K₃ $[F e {(C N)}_{6}] a n d [C o {(N H_{3})}_{6}] C l_{3},$ the spin- only magnetic moment value of the inner-orbital complex that absorbs light at shortest wavelength is ________ B.M [nearest integer]

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Amongst FeCl3.3H2O, K3 [ F e ( C N ) 6 ] a n d [ C o ( N H 3 ) 6 ] C l 3 , the spin- only magnetic moment value of the inner-orbital complex that absorbs light at shortest wavelength is ________ B.M [nearest integer]

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Amongst FeCl₃.3H₂O, K₃ $[F e {(C N)}_{6}] a n d [C o {(N H_{3})}_{6}] C l_{3},$ the spin- only magnetic moment value of the inner-orbital complex that absorbs light at shortest wavelength is ________ B.M [nearest integer]