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

In haemoglobin, CO and not O_2 links to Fe (if both CO and O_2 are pre

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» Solution :In haemoglobin, Fe is COORDINATED to FIVE groups and sixth SITE is free to which CO links if present.