The most abundant element in any organic structure, including the human is hydrogen.
If you are wondering by weight, it is: OXYGENIf you are wondering by number of atoms it is: HYDROGENIf you might wanna know, or more info...Here is this:The MOST abundant element in the human body is oxygen. It cover about two thirds. (Around 65% (in percentage) If you are looking by mass.
Hydrogen
Calcium is the main component of your bones and teeth. It comprises 1.5% of your total body weight making it the most abundant metallic element in the human body. Calcium is classified as an alkaline-earth metal Calcium (Ca++) is soft and naturally silver/grey/white in color Atomic number is 20 atomic mass 40.08. FYI- It is the fifth most abundant element and the third most abundant metal on Earth. It is found mainly as its carbonate CaCO3 ( chalk and limestone).
Element composition of the human body: 65% Oxygen 18% CARBON 10% Hydrogen 7% All other elements
based on our fundemental constituant being Carbon and its adherance to oxygen as CO2 and Hydrogen H2O (being 70% approx of body mass), then on mass is would be Oxygen.
If you are wondering by weight, it is: OXYGENIf you are wondering by number of atoms it is: HYDROGENIf you might wanna know, or more info...Here is this:The MOST abundant element in the human body is oxygen. It cover about two thirds. (Around 65% (in percentage) If you are looking by mass.
By weight or by number of atoms? By number of atoms
Oxygen is most abundant element .
Carbon is the most abundant element in the human body. Hydrogen, nitrogen, oxygen, phosphorus and sulfur are next in abundance.
By mass Oxygen
ejaculation
calcium
magnesium
Oxygen
The question is flawed. Substance can mean element or molecule. I'll go with molecule since organic simply means carbon atoms are present. Hydrogen dioxide is the most abundant inorganic "substance".
Oxygen, carbon, nitrogen, and hhydrogen
Oxygen is the most abundant element in a human, and on average is responsible for 33% of the body's mass. Carbon follows with 10%.