Elemental Composition of Human Body Table 2

Elemental Composition of Human Body ( reductionism )
Major Elements	Symbol	Percentage (by weight)
Oxygen	O	65.0
Carbon	C	18.5
Hydrogen	H	9.5
Nitrogen	N	3.3
Calcium	Ca	1.5
Phosphorus	P	1.0
Potassium	K	0.4
Sulfur	S	0.3
Sodium	Na	0.2
Chlorine	Cl	0.2
Magnesium	Mg	0.1
Trace Elements together less than 0.1%	boron (B), chromium (Cr), cobalt (Co), copper (Cu), Fluorine (F), iodine (I), iron (Fe), manganese (Mn), molybdenum (Mo), selenium (Se), silicon (Si), tin(Sn), vanadium(V), & zinc(Zn).