Question:
Chlorophyll is a coordination compound of
Chlorophyll is a coordination compound of
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Remember: Chlorophyll → Mg, Hemoglobin → Fe (very common exam question)
Updated On: May 2, 2026
- iron
- magnesium
- manganese
- chromium
- zinc
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The Correct Option is B
Solution and Explanation
Concept: Bioinorganic coordination compounds
Chlorophyll is the green pigment responsible for photosynthesis in plants. It is a coordination compound where a metal ion is coordinated to a large organic ligand. ---
Step 1: Structure of chlorophyll
• Chlorophyll consists of a porphyrin ring structure
• The ring contains nitrogen atoms which act as ligands
• These nitrogen atoms coordinate to a central metal ion ---
Step 2: Identify the central metal ion
• In hemoglobin → Fe (iron)
• In chlorophyll → Mg (magnesium) Thus, chlorophyll contains magnesium at the center of the coordination complex. ---
Step 3: Importance of magnesium
• Helps absorb light energy
• Facilitates electron transfer in photosynthesis
• Stabilizes the porphyrin structure --- Final Answer: \[ \boxed{\text{Magnesium}} \]
Chlorophyll is the green pigment responsible for photosynthesis in plants. It is a coordination compound where a metal ion is coordinated to a large organic ligand. ---
Step 1: Structure of chlorophyll
• Chlorophyll consists of a porphyrin ring structure
• The ring contains nitrogen atoms which act as ligands
• These nitrogen atoms coordinate to a central metal ion ---
Step 2: Identify the central metal ion
• In hemoglobin → Fe (iron)
• In chlorophyll → Mg (magnesium) Thus, chlorophyll contains magnesium at the center of the coordination complex. ---
Step 3: Importance of magnesium
• Helps absorb light energy
• Facilitates electron transfer in photosynthesis
• Stabilizes the porphyrin structure --- Final Answer: \[ \boxed{\text{Magnesium}} \]
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