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Elemental Composition
Atomic
The simplest body components are those that are essentially indestructible: atoms themselves.
Interesting but has few practical uses
Element Name
The human body is composed of various elements, some of which are essential for physiological functions, while others may not have any known biological role. Here is a list of elements found in the human body along with their approximate percentage of total body mass:
Oxygen (O) - 65%
Carbon (C) - 18%
Hydrogen (H) - 10%
Nitrogen (N) - 3%
Calcium (Ca) - 1.5%
Phosphorus (P) - 1.0%
Potassium (K) - 0.25%
Sulfur (S) - 0.25%
Sodium (Na) - 0.15%
Chlorine (Cl) - 0.15%
Magnesium (Mg) - 0.05%
These elements make up about 99% of the human body's mass. The remaining 1% consists of trace elements, some of which are essential for physiological functions, while others have no known biological role or are present due to environmental exposure. Trace elements include:
Iodine (I) - 0.000016%
Iron (Fe) - 0.006%
Zinc (Zn) - 0.003%
Copper (Cu) - 0.0001%
Manganese (Mn) - 0.00002%
Fluorine (F) - 0.00003%
Molybdenum (Mo) - 0.00001%
Selenium (Se) - 0.000019%
Cobalt (Co) - 0.000002%
Nickel (Ni) - 0.00001%
Silicon (Si) - 0.00005%
Vanadium (V) - 0.00001%
Tin (Sn) - 0.00001%
Boron (B) - 0.00002%
Cadmium (Cd) - Trace amounts
Barium (Ba) - Trace amounts
Strontium (Sr) - Trace amounts
Tungsten (W) - Trace amounts
Gold (Au) - Trace amounts
Mercury (Hg) - Trace amounts
Aluminum (Al) - Trace amounts
Arsenic (As) - Trace amounts
Bismuth (Bi) - Trace amounts
Lithium (Li) - Trace amounts
Lead (Pb) - Trace amounts
Platinum (Pt) - Trace amounts
Radium (Ra) - Trace amounts
Rubidium (Rb) - Trace amounts
Silver (Ag) - Trace amounts
Thallium (Tl) - Trace amounts
Thorium (Th) - Trace amounts
Uranium (U) - Trace amounts
Zirconium (Zr) - Trace amounts
It's important to note that the percentages provided here are approximate and can vary depending on an individual's age, sex, and overall health. Additionally, the presence of some elements in the human body may be due to environmental exposure and not necessarily indicative of a physiological role.