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Answer the following question:
 
Why is it not possible to see an atom with naked eyes?
 
It is not possible to see an atom with naked eyes because the of an atom is very, very small.
The size of an atom is measured in nanometers (nm).

1 nm = meters = \(10^-{^9}\) nm

Hence, we can not even imagine how tiny an atom can be; it is impossible to see an atom with naked eyes.