Index of Elements Basic Elements Macro Essential Mineral Elements Micro or Trace Essential Elements Toxic Elements Carbon Calcium Boron Aluminum Hydrogen Chlorine Chromium Antimony Nitrogen Magnesium Cobalt Arsenic Oxygen Phosphorus Copper Barium   Potassium Fluorine Beryllium   Sodium Germanium Bismuth     Iodine Cadmium     Iron Lead     Lithium Mercury     Manganese Nickel     Molybdenum Silver     Selenium Thallium     Strontium Uranium     Sulfur       Tin       Vanadium       Zinc