GKFix MCQ Question

Which complex corresponds to a 1:1 electrolyte and is green in color?

• A. [Co(NH₃)₆]Cl₃
• B. [CoCl(NH₃)₅]Cl₂
• C. [CoCl₂(NH₃)₄]Cl (green)
• D. [CoCl₂(NH₃)₄]Cl (violet)