Single correct option
The central metal atom in a chlorophyll molecule is
- A. iron
- B. magnesium
- C. copper
- D. zinc
Show answer and solution
Answer: (B) magnesium
Chlorophyll has a porphyrin ring with a magnesium ion at its centre, which is needed for absorbing light. Iron occupies the corresponding place in haemoglobin. Hence iron is a tempting but incorrect choice.
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