Term: Sodium, Description: Chemical element with atomic number 11, Question: Is sodium the most abundant element in the human body?, Answer:No
Fact1: Almost 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.  Fact2:  Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium.  