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Atomic structure Every particle in this universe is divisible for example : a piece of chalk can be smashed into chalk powder . a loaf of bread can be made into crumbs of bread like wise every particle can be divide "A hard,dense,indivisible ,smallest particle is called atom." This is proposed by J.J. Dalton . But the people criticized that some elements(radioactive elements or gas) like uranium emits radiation . Then they came to a conclusion that Atoms are divisible. then there raised a question that what the components of the atoms are. a experiment was conducted to find the components of atoms. A cathode (a metallic con...
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