what is the most abundant chemical in the body
The most abundant element in the human body   by number of atoms-hydrogen   by weight-oxygen   The most abundant element in the human body is oxygen. About two t â¦ hirds (65%) of the human body is oxygen by mass.    The most abundant metal in the human body is calcium.f you are wondering by weight, it is: OXYGEN If you are wondering by number of atoms it is: HYDROGEN If you might wanna know, or more info...Here is this: The MOST abundant â¦ element in the human body is oxygen. It cover about two thirds.