Eli5 why is that an atom is 99,6 % empty space ?

Question

Eli5 why is that an atom is 99,6 % empty space ?

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Answer 1

if the core (nucleus) of an atom would be the size of an orange, the electron cloud would be the size of Earth. Since we consider the “surface” of the electron cloud the surface of an atom and since nothing is in between, we can say that an atom is mostly empty space.