Multiple Choice
Diamond and graphite are different allotropes of which element?
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5. Molecules and Compounds
Periodic Table: Elemental Forms (Simplified)
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Which element is a major component found in chlorophyll molecules?
A
Sodium (Na)
B
Magnesium (Mg)
C
Chlorine (Cl)
D
Iron (Fe)
Verified step by step guidance1
Understand the structure of chlorophyll: Chlorophyll is a pigment molecule essential for photosynthesis in plants, and it contains a central metal ion that plays a crucial role in its function.
Recall that the central metal ion in chlorophyll is a transition metal that helps capture light energy; this metal is not sodium (Na), chlorine (Cl), or iron (Fe) in the major form of chlorophyll.
Identify that magnesium (Mg) is the metal ion coordinated at the center of the chlorophyll molecule, which is key to its ability to absorb light and participate in photosynthesis.
Recognize that magnesium's role in chlorophyll is similar to how iron functions in hemoglobin, but in chlorophyll, magnesium is the essential metal component.
Conclude that among the given options, magnesium (Mg) is the major component found in chlorophyll molecules.
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