Structural diagrams of chlorophyll a and b show a porphyrin ring; which central metallic ion is coordinated within this ring?
Q1. Structural diagrams of chlorophyll a and b show a porphyrin ring; which central metallic ion is coordinated within this ring?
Answer: Magnesium
Explanation: Magnesium is the central atom of chlorophyll's porphyrin ring. Iron (Option D) is found in heme groups like hemoglobin.