NEET Chemistry: Coordination Compounds — Practice Set 5
Q1. Which complex has a coordination sphere with a charge of +1?
A. \( \ce{[Ni(NH3)5Cl]Cl} \)
B. \( \ce{[Fe(CN)6]^4-} \)
C. \( \ce{[Co(NH3)6]^3+} \)
D. \( \ce{[CuCl4]^2-} \)
Q2. The magnetic moment of \( \ce{[CuCl4]^2-} \) is approximately: (Cu atomic number = 29)
A. 3.87 BM
B. 2.83 BM
C. 5.92 BM
D. 1.73 BM
Q3. How many chloride ions are outside the coordination sphere in \( \ce{[Co(NH3)3Cl3]Cl} \)?
A. 1
B. 2
C. 3
D. 0
Q4. What is the shape of the complex formed when \( \ce{Ni^2+} \) coordinates with 4 \( \ce{CN^-} \) ligands?
A. Tetrahedral
B. Octahedral
C. Linear
D. Square planar
Q5. Which complex has a higher \( \Delta_o \) than \( \ce{[Co(NH3)6]^3+} \) due to its ligands?
A. \( \ce{[CoF6]^3-} \)
B. \( \ce{[Co(H2O)6]^3+} \)
C. \( \ce{[Co(CN)6]^3-} \)
D. \( \ce{[CoCl6]^3-} \)
Q6. Which complex has the highest number of unpaired electrons when the metal is in a +3 oxidation state with weak field ligands in an octahedral field?
A. \( \ce{[CrF6]^3-} \)
B. \( \ce{[CoF6]^3-} \)
C. \( \ce{[FeF6]^3-} \)
D. \( \ce{[MnF6]^3-} \)
Q7. What is the hybridization of Cu in \( \ce{[Cu(NH3)4]^2+} \)?
A. \( sp^3 \)
B. \( sp^3d^2 \)
C. \( d^2sp^3 \)
D. \( dsp^2 \)
Q8. What type of isomerism is exhibited by \( \ce{[Co(NH3)5(NO2)]^2+} \) when \( \ce{NO2^-} \) binds through oxygen instead of nitrogen?
A. Geometrical
B. Ionization
C. Linkage
D. Coordination
Q9. How many unpaired electrons are present in \( \ce{[Fe(H2O)6]^2+} \)? (Fe atomic number = 26)
A. 2
B. 4
C. 0
D. 6
Q10. Which metal ion in an octahedral field with \( d^4 \) configuration and weak field ligands has 4 unpaired electrons?
A. \( \ce{Fe^2+} \)
B. \( \ce{Co^3+} \)
C. \( \ce{Mn^3+} \)
D. \( \ce{Cr^2+} \)
Chemistry — Coordination Compounds
Set 5 of 21
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