A free radical is an atom or molecule that has an unpaired one of these
The remaining 0.2% of the body's mass is made of these 14 elements
: ... Ex  H2O means 2 hydrogen atoms and 1 oxygen atoms have joined ... or 
molecule that has an unpaired electron in its outermost shell; A free radical is 
unstable... [DOC] [TLE] Free radicals and your health - Healingdaily.com [PAR] These electrons surround the nucleus in pairs, but occasionally an atom loses an 
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