Which of the following statements about the complex ion Co(en)₂Cl₂⁺ is true? (en = ethylenediamine, NH₂CH₂CH₂NH₂)

Question

Quizplus · Accepted Answer

The naming of the complex ion indicates that it contains one Co(II) ion, four en molecules (bidentate ligands), one Cl- ion, and two dithiocyanate (NCS-) ions. This complex ion exhibits two geometric isomers (cis and trans) due to the presence of the two bidentate ligands (en) and their possible arrangements relative to each other. Additionally, due to the presence of chiral centres in the en ligands, the complex ion also exhibits two optical isomers (enantiomers). Therefore, statement B is correct. Statement A is incorrect because geometric isomers have different spatial arrangements, which result in different chemical properties. Statement C is incorrect because en is a weak field ligand, which results in a low-spin configuration and diamagnetic properties. Statement D is incorrect because optical isomers are present in addition to the cis and trans isomers. Statement E is incorrect because Co(I) would lose its only electron to form a cation with a charge of +1, and this complex ion has a charge of +2, indicating the presence of a Co(II) ion.

Which of the Following Statements About the Complex Ion Co(en)2Cl2+ Δ\DeltaΔ

Which of the Following Statements About the Complex Ion Co(en)₂Cl₂⁺ $\Delta$