JEE Main 2020 (Online) 9th January Evening Slot | Coordination Compounds Question 186 | Chemistry

The correct order of the spin-only magnetic moments of the following complexes is :
(I) [Cr(H₂O)₆]Br₂
(II) Na₄[Fe(CN)₆]
(III) Na₃[Fe(C₂O₄)₃] ($$\Delta $$₀ $$>$$ P)
(IV) (Et₄N)₂[CoCl₄]

(III) > (I) > (II) > (IV)

(II) $$ \approx $$ (I) > (IV) > (III)

(III) > (I) > (IV) > (II)

(I) > (IV) > (III) > (II)

JEE Main 2020 (Online) 9th January Evening Slot

MCQ (Single Correct Answer)

-1

The isomer(s) of [Co(NH₃)₄Cl₂] that has/have a Cl–Co–Cl angle of 90°, is/are :

cis only

cis and trans

meridional and trans

trans only

JEE Main 2020 (Online) 9th January Morning Slot

MCQ (Single Correct Answer)

-1

Complex X of composition Cr(H₂O)₆Cl_n has a spin only magnetic moment of 3.83 BM. It reacts with AgNO₃ and shows geometrical isomerism. The IUPAC nomenclature of X is :

Hexaaqua chromium (III) chloride

Tetraaquadichlorido chromium(IV) chloride dihydrate

Tetraaquadichlorido chromium (III) chloride dihydrate

Dichloridotetraaqua chromium (IV) chloride dihydrate

JEE Main 2020 (Online) 9th January Morning Slot

MCQ (Single Correct Answer)

-1

[Pd(F)(Cl)(Br)(I)]^2– has n number of geometrical isomers. Then, the spin-only magnetic moment and crystal field stabilisation energy [CFSE] of [Fe(CN)₆]^n–6, respectively, are:
[Note : Ignore the pairing energy]

1.73 BM and –2.0 $$\Delta $$₀

5.92 BM and 0

2.84 BM and –1.6 $$\Delta $$₀

0 BM and –2.4 $$\Delta $$₀

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