Check sibling questions

Rutherford’s alpha-particle scattering experiment was responsible for the discovery of

(a) Atomic Nucleus       (b) Electron

(c) Proton                     (d) Neutron

 

Answer

 

(a) Atomic Nucleus

 

Explanation -  

  • Proton and Electron were known before Rutherford’s experiment.
  • The existence of neutrons was not known.
  • It was only known after Rutherford’s alpha-particle scattering experiment that the Atomic nucleus existed.
  • In the experiment a fraction of the particles bounced back at an angle of 180 o proving that nearly all the mass of an atom is contained in the nucleus.

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CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Accounts and English at Teachoo