Given the ionic compound FeCl₃, classify the cation and determine its acidity.

• A. Fe³⁺ is a positive amine and is acidic.
• B. Fe³⁺ is a transition metal cation and is neutral.
• C. Fe³⁺ is a transition metal cation and is acidic.
• D. Fe³⁺ is a main group metal cation and is neutral.

Answer: (C)