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How small is an atom?

GeneralClass 12AllAnswered 27 Mar 2026
Answer

An atom is about 0.1 nanometers wide, which is one ten-billionth of a meter. Millions of atoms placed side by side would equal the thickness of a human hair.

Atoms are far too small to be seen with optical microscopes. Scientists use advanced instruments like electron microscopes to study atomic structures.

General · Class 12