The ABOVE table of the human essential elements consists of twenty-five (25) elements. This listing is top-most (Oxygen) to bottom-least (Chromium) elements. Silver and gold have no physiological chemistry.
The table amounts are in both percentage and fraction. The last column has statements of what is essential about an item.
The order of essential elements is: O C H N Ca P S K Na Cl Fe Mg F Zn Si Cu B V Se Mn I Ni Mo Co Cr.
The problematic aspect is the concentrations go down to parts-per-billion. These low levels make assignments of essential elements questionable. The complete Molecular Elements Periodicity table is given at this hyperlink.
The list of human essential elements varies among countries ; but, one periodic table version is shown BELOW.
