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How was protons and electrons discovered ?

User Matt Coarr
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Yah thomos found that atoms had a negative charge
User Pampy
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OK so basically many experiments were done and Ernest Rutherford found that atoms had a positive charge and it contains most of its mass. and for the electron J.J. Thomson found that atoms have a negative charge after a various amount of study and experimentation 
User NoobEinstien
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