Question

why does an atom has the smallest diameter​

Answer 1

There is no one definite diameter of an atom because since the number of electrons in the outer principal energy level increases as you go from left to right in each period, the corresponding increase in the nuclear charge due to the additional protons pulls the electrons more tightly around the nucleus.

Answer 2

Answer:

In the world their is a biggest thing like that there is a smallest thing that is atom.

Its name is atom becaz it has came from a Greek word which means invisible

Actually there is no definite diameter of atom

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