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Coordination Chemistry Mock Tests

16 questions available

Coordination Chemistry Mock Test 1

Questions: 16

Sample Questions

GATE Chemistry
What is the spin-only magnetic moment (in Bohr magnetons, μ_B) of the complex ion [Fe(CN)₆]³⁻? (Use the formula μ = √[n(n+2)] μ_B, where n is the number of unpaired electrons. Consider that CN⁻ is a strong-field ligand and Fe is in the +3 oxidation state.)
A 1.73 μ_B (one unpaired electron)
B 5.92 μ_B (five unpaired electrons)
C 2.83 μ_B (two unpaired electrons)
D 0 μ_B (no unpaired electrons)
GATE Chemistry
The transition metal complex [Co(en)₃]³⁺ is chiral and exists as Δ and Λ enantiomers. The "Δ" (delta) designation refers to:
A A left-handed propeller-like arrangement of the chelate rings
B A right-handed propeller-like arrangement of the chelate rings
C A linear arrangement of the ligands
D A tetrahedral geometry
GATE Chemistry
The complex [Co(NH₃)₅Cl]SO₄ and [Co(NH₃)₅SO₄]Cl are examples of which type of isomerism?
A Ionisation isomerism
B Linkage isomerism
C Coordination isomerism
D Geometrical isomerism
GATE Chemistry
The number of unpaired electrons in the complex ion [CoF₆]³⁻ is:
A 0
B 1
C 4
D 6
NEET Chemistry
Which of the following is the correct order of crystal field splitting energy (Δ₀) for the given complexes?
A [Co(NH₃)₆]³⁺ < [Co(CN)₆]³⁻ < [Co(F)₆]³⁻
B [Co(F)₆]³⁻ < [Co(NH₃)₆]³⁺ < [Co(CN)₆]³⁻
C [Co(CN)₆]³⁻ < [Co(NH₃)₆]³⁺ < [Co(F)₆]³⁻
D [Co(NH₃)₆]³⁺ < [Co(F)₆]³⁻ < [Co(CN)₆]³⁻
GATE Chemistry
The number of unpaired electrons in the hexafluorocobaltate(III) ion, [CoF₆]³⁻, is:
A 0
B 1
C 4
D 6
NEET Chemistry
Which of the following is the correct order of magnetic moments for [Fe(H₂O)₆]²⁺, [Fe(CN)₆]⁴⁻, and [Fe(CN)₆]³⁻?
A [Fe(H₂O)₆]²⁺ > [Fe(CN)₆]³⁻ > [Fe(CN)₆]⁴⁻
B [Fe(CN)₆]⁴⁻ > [Fe(CN)₆]³⁻ > [Fe(H₂O)₆]²⁺
C [Fe(CN)₆]³⁻ > [Fe(H₂O)₆]²⁺ > [Fe(CN)₆]⁴⁻
D [Fe(H₂O)₆]²⁺ > [Fe(CN)₆]⁴⁻ > [Fe(CN)₆]³⁻
GATE Chemistry
The number of unpaired electrons in the complex ion [CoF₆]³⁻ is (Co atomic number = 27):
A 0
B 1
C 4
D 5

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