NEET Coordination Compounds — Set 21

Question 1

Which complex exhibits linkage isomerism?

Accepted Answer

Linkage isomerism occurs with ambidentate ligands like $ \ce{NO2^-} $, which can bind via N or O. $ \ce{[Co(NH3)5NO2]^2+} $ can form $ \ce{[Co(NH3)5ONO]^2+} $, showing linkage isomerism.

Question 2

Which complex has a coordination sphere that conducts electricity in solution due to 3 ionizable ions?

Accepted Answer

$ \ce{[Co(NH3)6]Cl3} $ dissociates into $ \ce{[Co(NH3)6]^3+} $ and 3 $ \ce{Cl^-} $, producing 4 ions total, but the sphere itself is associated with 3 counter ions.

Question 3

How many ionizable chloride ions are present in $ \ce{[Co(NH3)4Cl2]Cl} $?

Accepted Answer

In $ \ce{[Co(NH3)4Cl2]Cl} $, the $ \ce{Cl^-} $ outside the coordination sphere is ionizable. The 2 $ \ce{Cl^-} $ inside are ligands and not ionizable. Thus, 1 $ \ce{Cl^-} $ ionizes.

NEET Chemistry: Coordination Compounds — Practice Set 21

Q1. Which complex exhibits linkage isomerism?

Q2. Which complex has a coordination sphere that conducts electricity in solution due to 3 ionizable ions?

Q3. How many ionizable chloride ions are present in \( \ce{[Co(NH3)4Cl2]Cl} \)?

Q4. How many ligands in \( \ce{[Cr(en)2(H2O)2]^3+} \) contribute to its chirality?

Q5. How many geometrical isomers are possible for \( \ce{[Cr(H2O)3Cl3]} \) excluding optical isomers?

Q6. Which ligand is present in the complex \( \ce{[Co(en)3]^3+} \)?

Q7. What is the coordination number of the cobalt ion in the compound \( \ce{[Co(NH3)6]Cl3} \)?

Q8. What is the oxidation state of cobalt in \( \ce{[Co(en)2Cl2]NO3} \)?

Q9. Which ligand in \( \ce{[Co(NH3)4(SCN)Cl]^+} \) can be replaced to form a linkage isomer?

Q10. Which complex has ligands arranged in a meridional configuration as one of its geometrical isomers?