how do you know that the presence of atom if they do not exist independently for most of the element
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there were number of theories that Detroit to predict the constitution of matter..
Many experiments were made and many scientist gave their predictions..
however the best bro was given by rutherford's scattering experiment that proved that the centre of an atom is very dense and most of the atom is a hollow part that contains electrons and protons another subatomic particles..
and that is how we know an atom exist.
nowadays atoms can be seen through electron microscope..
hope my answer helps you!
Many experiments were made and many scientist gave their predictions..
however the best bro was given by rutherford's scattering experiment that proved that the centre of an atom is very dense and most of the atom is a hollow part that contains electrons and protons another subatomic particles..
and that is how we know an atom exist.
nowadays atoms can be seen through electron microscope..
hope my answer helps you!
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