A free radical is an atom or molecule that has an unpaired one of these
These thermodynamic properties can be used to predict a pecking 
order,... [DOC] [TLE] Free radicals, antioxidants and functional foods: Impact on human ... [PAR] [1] It is ironic that oxygen, an element indispensable for life,[2] under certain 
situations has ... Free radicals and antioxidants have become commonly used 
terms in ... of independent existence that contains an unpaired electron in an 
atomic orbital.