Short Answer:
There are 60 types of elements normally detectable in the human body with two dozen known to be either essential or beneficial. Three, however, H,C, and O,
make up the majority of our atoms.
Long Answer:
Hydrogen represents 63% of the atoms in our body but only 10% of our mass.
Oxygen is almost 2/3 rds (65%) of our mass but only 12% of our atoms.
Carbon is 1/8th (12%) of the atoms and 18% of the mass.
Together, H+C+O, account for 63+24+12=99% of the atoms and 65+18+10=93% of our mass.
One has to add in nitrogen + calcium + phosphorus + potassium + sulfur (=3%+1.4%+1.1%+.25%+.25%) to get 7% more and account for 99% of our mass.
Short Answer:
By weight, oxygen makes up approximately 65% of the human body.
Carbon comes in second with 18% of the mass
Hydrogen adds 10% more of the mass.
These three account for 93% of the mass of the human body.
Numerically, hydrogen 63% of the total number of atoms in the human body, but it is probably closer to 63% for most people.
Accounting by Mass:
The mass of the human body is provided mostly by oxygen, carbon, hydrogen, nitrogen. Together these elements account for about 96% of the mass of a human.
Add in about a kilogram of calcium in the bones and body fluids and you are up to 97.4%. All of this depends on the particular person since water, our major component, can differ by 10% from one individual to another.
That said, typically the breakdown goes like this.
Oxygen: 65% of the mass
Carbon: 18% of the mass
Hydrogen: 10% of the mass
Nitrogen: 3% of the mass
Calcium: 1.4 % of the mass
Phosphorus 1.1% of the mass
With phosphorus, one has accounted for 98.5% of the mass of the typical human and that will change by a couple of tenths from person to person.
Accounting by Numbers:
Numerically we have nearly twice as many hydrogen atoms in our bodies as compared to all other elements combined. Specifically, hydrogen counts as 63% of our atoms by number, give or take a bit, but being so light it barely gets to 10% of our mass. Oxygen atoms count as 24% and carbon atoms are a mere 12% of the populations. Together, our three basic organic building blocks account for 99% of all the atoms in the body.
Caveat:
As was said above, the water content of the human body weight varieties between 55 to 65 % from one person to the next and being the major component changes the numbers above a little for each individual.
Summary:
Almost 99% of the mass of the human body is made up of the six elements oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.
Most of the last 1% is made up of five elements: potassium, sulfur, sodium, chlorine, and magnesium, but a tenth of a percent or so is made up of another dozen or so elements which include those recognized as essential to health such as iron, iodine and fluorine as well as beneficial trace elements like manganese, copper and zinc.
C, H, O
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Hydrogen, Oxygen, and Carbon.
The three elements are carbon, hydrogen and oxygen. Sugar is a carbohydrate.
There are three Calcium,Sulphar,Oxygen
CHNOPS - The acronym CHNOPS, which stands for carbon, hydrogen, nitrogen, oxygen, phosphorus, sulfur, represents the six most important chemical elements whose covalent combinations make up most biological molecules on Earth.
water
Carbon, Hydrogen, Oxygen and Nitrogen are the 4 elements that make up >95% of the human body.
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The four elements that make up the greatest percentage of the human body by percentage of body mass are oxygen (65%), carbon (18.5%), hydrogen (9.5%), and nitrogen (3.2%) but there are many others in smaller amounts.
CHNOPS: carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur in order of amount of these elements.
Hydrogen, Oxygen, and Carbon.
water protein fat
CHNOPS: carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur in order of amount of these elements.
Hydrogen makes up 10% of the human body, Oxygen makes up 65% of the human body, and Carbon makes up 18% of the human body. Hydrogen combines with the Oxygen to create water that is also inside of the human body. -Hope this answers your question.
draw your human body and locate them
Approximately 83% of the human body is either oxygen or carbon. About 18% percent of the human body is carbon and around 65% is oxygen.
Trace Elements Oxygen Carbon Hydrogen Nitrogen These four elements make up 96% of the human body.