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Number of Atoms in the Human Body

How many atoms are there in the human body?

7 Ã— 1027 atoms.

There are approximately 7 Ã— 1027 atoms that can be found in an average human body. This is equivalent to 7 octillion atoms or 7,000,000,000,000,000,000,000,000,000 if written out in long scale. This is according to an approximation made by the Science Education Program of the Thomas Jefferson National Accelerator Facility.

This fact is verified on : February 25, 2010.

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