1.

In haemoglobin, CO and not `O_2` links to Fe (if both CO and `O_2` are present ) because CO is a stronger ligand than `O_2`. The number of groups to which Fe is coordinated other than vacant site for CO in haemoglobin is

Answer» Correct Answer - 5
In haemoglobin, Fe is coordinated to five groups and sixth site is free to which CO links if present.


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