How many atoms are in the human body?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
The human body contains approximately 7 × 10²⁷ atoms. This enormous number comes from the atoms present in water, proteins, fats, and other biological molecules.
Most of these atoms are hydrogen, oxygen, carbon, and nitrogen. This highlights how incredibly small atoms are and how complex the human body is at the atomic level.
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