Chlorophyll a and b are the main photosynthetic pigments. Which metallic ion is coordinated at the center of their porphyrin ring structure?
Q1. Chlorophyll a and b are the main photosynthetic pigments. Which metallic ion is coordinated at the center of their porphyrin ring structure?
Answer: Magnesium
Explanation: Magnesium occupies the center of the porphyrin ring in chlorophyll. Iron is incorrect because it is the central metal in heme groups.