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

question 18

Multiple Choice

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

• A)The complex ion contains Co(I).
• B)The complex ion exhibits cis and trans geometrical isomers,but no optical isomers.
• C)The complex ion exhibits two geometrical isomers (cis and trans)and two optical isomers.
• D)Since en is a strong field ligand (large \(\Delta\)),the complex ion is paramagnetic.
• E)The geometric isomers of the complex ion have identical chemical properties.

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