Question

2. Why is it not possible to see an atom with naked eyes?
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Answer 1

Answer:

atom are really so small in fact that is impossible to see one with naked eyes even with the most power microscope so we can't see atom with naked eyes.

Answer 2

Answer:

cuz Size is in picometer ( Roughly 100 picometer)

Explanation:

And you can't see cuz of our irises aren't capable to capture or notice reflected rays from atom surface, although it has quite a less surface to reflect.