Structure of the Atoms class 12th chemistry

INTRODUCTION:

☞The atomic theory was first proposed on firm scientist basic by John Dalton, a British school teacher in 1808.

☞His theory called Dalton's atomic theory regarded the atomic as the ultimate particle of matter.

☞In between 19th to 20th century is many scientists came of the idea that the atom is further divided into subatomic particle.

 ☞Subatomic particle are:-

(a)Electron

(b)Proton

(c)Neutron

DISCOVERY OF ELECTRON

  

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