Question

Which of the following is a characteristic of a coordination compound?

• A. It has a definite molecular formula.
• B. It has a high melting point and is a good conductor of electricity in solid state.
• C. It contains a central metal atom/ion bonded to a number of ligands.
• D. It is always insoluble in water.

Hint:

Coordination compounds typically involve metal-ligand coordination bonds, and the ligands donate electron pairs to the central metal.

Answer 1

The Correct Option is C

A coordination compound is formed when a central metal ion or atom is surrounded by a number of ligands, which are molecules or ions that can donate electron pairs to the metal ion. 
Step 1: Review the options - Option 1: While coordination compounds can have a definite molecular formula, this is not their most distinguishing feature. 
- Option 2: Coordination compounds do not necessarily have high melting points or conduct electricity in the solid state. This is more typical of ionic compounds. 
- Option 3: The hallmark of a coordination compound is the bonding of a central metal atom/ion with ligands. This option is correct. 
- Option 4: Coordination compounds can be soluble in water, especially if they form ions in solution. 
Answer: The correct characteristic of a coordination compound is option (3) — it contains a central metal atom/ion bonded to a number of ligands.