A) chlorophyll
B) Mohrs salt
C) haemoglobin
D) vitamin \[{{B}_{12}}\]
Correct Answer: C
Solution :
Haemoglobin, contains two part viz, haem and globular protein. Haem part of haemoglobin contains one \[F{{e}^{2+}}\] ion (iron) coordinated in a square planar array with the four N-atoms of a porphyrin molecule. Chlorophyll is a coordination compound of Mg, vitamin \[{{B}_{12}}\] is a coordination compound of Co while Mohrs salt is a double salt, not a coordination compound.
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