Question

which factor leads to the discovery of atom?..​

Answer 1

HEY MATE ☺️

HERE'S THE ANSWER...

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THE THEORIES OF DALTON LED THE DISCOVERY OF ATOMS.

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Answer 2

Thomson's discovery of the electron. Actually, what Thomson discovered was that cathode rays were streams of negatively charged particles with a mass about 1,000 times smaller than a hydrogen atom. He claimed that these particles, which he called “corpuscles,” were the things that atoms were made from.