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ChemistryNEET 2024Nomenclature and Werner's theory

Coordination Compounds

Given below are two statements:

Statement I: [Co(NH3)6]3+\mathrm{[Co(NH_3)_6]^{3+}} is a homoleptic complex whereas [Co(NH3)4Cl2]+\mathrm{[Co(NH_3)_4Cl_2]^+} is a heteroleptic complex.

Statement II: The complex [Co(NH3)6]3+\mathrm{[Co(NH_3)_6]^{3+}} has only one kind of ligand but [Co(NH3)4Cl2]+\mathrm{[Co(NH_3)_4Cl_2]^+} has more than one kind of ligand.

In the light of the above statements, choose the correct answer from the options given below:

  1. A.Both Statement I and Statement II are false
  2. B.Statement I is true but Statement II is false
  3. C.Statement I is false but Statement II is true
  4. D.Both Statement I and Statement II are true✓

Solution

A homoleptic complex has only one kind of ligand ([Co(NH3)6]3+\mathrm{[Co(NH_3)_6]^{3+}}); a heteroleptic one has more than one kind ([Co(NH3)4Cl2]+\mathrm{[Co(NH_3)_4Cl_2]^+}). Both statements are true and II is the definition behind I.

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