Haemoglobin is a complex compound of which metal ion? – McqOptions

MCQOPTIONS

1.	Haemoglobin is a complex compound of which metal ion?
A.	Fe<sup>2+</sup>
B.	Fe<sup>3+</sup>
C.	Co<sup>2+</sup>
D.	Co<sup>3+</sup>
Answer» B. Fe<sup>3+</sup>

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