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QJEEM23Ch5e3f: JEE Main 2023 Chemistry - Class 12 JEEM23Ch5e3f Solution: Correct order of spin only magnetic moment of the following…

Correct order of spin only magnetic moment of the following complex ions is :

(Given At.no. Fe : 26, Co : 27)

Multiple Choice Options

  • A [CoF6]3−>[FeF6]3−>[Co(C2O4)3]3−\mathrm{[CoF_6]^{3-} > [FeF_6]^{3-} > [Co(C_2O_4)_3]^{3-}}
  • B [FeF6]3−>[Co(C2O4)3]3−>[CoF6]3−\mathrm{[FeF_6]^{3-} > [Co(C_2O_4)_3]^{3-} > [CoF_6]^{3-}}
  • C [FeF6]3−>[CoF6]3−>[Co(C2O4)3]3−\mathrm{[FeF_6]^{3-} > [CoF_6]^{3-} > [Co(C_2O_4)_3]^{3-}}
  • D [Co(C2O4)3]3−>[CoF6]3−>[FeF6]3−\mathrm{[Co(C_2O_4)_3]^{3-} > [CoF_6]^{3-} > [FeF_6]^{3-}}

Step-by-Step Verified Solution

[FeF6]3−⟶5 unpaired electrons

[Co(C2O4)3]3−⟶0 unpaired electron

[CoF6]3−⟶4 unpaired electrons

So, correct answer is : (3)

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