✏️Particles of the Atom

#1) Who discovered electron, proton and neutron?

• Electron - JJ Thompson (Joseph John Thompson)
• Proton - Ernest Rutherford
• Neutron - James Chadwick

#2) Why is the work of J. J. Thompson important?

• Because of his work, it can allows to open the door for experemental discovery of sub-atomic particles.

#3) How did J. J. Thompson discover electrons?

• He used the cathiode ray tube where he has discovered and observed the bending of cathiode ray in the presence of electrical plate or magnet.

#4) How did Chadwick discover neutron?

• He used the bombardment of thin berylium sheet with alpha radiation and observed an emission of uncharged particle.

#5) How did Rutherford discover proton?

• He used the gold-foil experiment to observe a deflection of an alpha radiation as it passes through the thin gold-foil which led to his discovery of a positively-charged particle in the nucleus of an atom.

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