In a diagram of the chlorophyll molecule, the flat square-like porphyrin ring is positioned to absorb light. What central atom is coordinated by four nitrogen atoms in this structure?
Q1. In a diagram of the chlorophyll molecule, the flat square-like porphyrin ring is positioned to absorb light. What central atom is coordinated by four nitrogen atoms in this structure?
Answer: Magnesium
Explanation: Magnesium occupies the center of the porphyrin ring; Iron is the central atom in hemoglobin, making it a common distractor.