Question:
we know that coordination compound of magnesium is chlorophyll,but magnesium is not a transition metal to form coordination compounds
Answer:
Chlorophyll is a magnesium – porphyrin complex. The magnesium is at the centre of the modified porphyrin ring septeon (corrin). The oxidation state of magnesium is +2 (Mg2+). The modified porphyrin acts as the ligand. Mg is not a transition metal, no hyperfine structure is observed. The source of the unpaired electron must be the ligand, not the metal.
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