How do you know that nucleus is very small as compared to the size of atom.
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As radius of an atom is approximately 10^-10 but radius of nucleus is approximately 10^-15
It is as small ball lying in center of big circle ground
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The nucleus of an atom is about 10-15 m in size; this means it is about 10-5 (or 1/100,000) of the size of the whole atom. A good comparison of the nucleus to the atom is like a pea in the middle of a racetrack. (10-15 m is typical for the smaller nuclei; larger ones go up to about 10 times that.)
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