The elements of the human body are nearly two dozen. These elements in order of abundance are: O C H N Ca P K S Na Cl Mg Fe F Zn B As Se I Mn Mo Co Li Cr & probably another. The ten macronutrients O C H N Ca P K S Na Cl are known essential elements. Parts per Million concentration for Mg Fe F Zn, and parts per Billion concentration for B As Se I Mn Mo Co Li Cr. The isotopic elements of life are of low atomic numbers. Molecular Elements Periodicity is a simpler table at this hyperlink, shown in Latin letters and Chinese Characters.