Structure of the Atom | Ch-4 Class 9 Chemistry Quick Revision Notes | NCERT CBSE | Edugrown

Structure of the Atom | Ch-4 Class 9 Chemistry Quick Revision Notes

→ John Dalton considered atom to be an indivisible entity, but his concept had to be discarded at the end of nineteenth century, when scientists through experiments were able to find existence of charged (electrons and protons) and neutral particles (neutrons) in the atom. These particles were called the ‘Sub-atomic Particles’.

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