Suggest a reason as to why CO is poisonous.
Carbon monoxide is highly poisonous due to its ability to form a complex with hemoglobin. The former prevents Hb from binding with oxygen. Thus, a person dies because of suffocation on not receiving oxygen The CO–Hb complexly is more stable than the O2–Hb complex. It is found that the CO–Hb complex is about 300 times more stable than the O2–Hb complex.