Question

What is an atom? Why is it not possible to see an atom with naked eyes?​

Answer 1

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It is not possible to see an atom with naked eye because of its extremely small size (atomic radius is of the order of 10-10 m).

Answer 2

Answer:

Atoms are really small. So small, in fact, that it's impossible to see one with the naked eye, even with the most powerful of microscopes.