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Question

Which element forms the central metal ion of the chlorophyll molecule in green plants?

This question was previously asked in
CDS I 2018 Elementary Mathematics Previous Year Paper (04-Feb-2018)
The correct answer is

Magnesium

Magnesium is the central metal ion in chlorophyll. Iron is also required for chlorophyll synthesis but is not its central ion. Magnesium, calcium and sulfur are macronutrients, not micronutrients.

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