Explain in brief the experimental proof which led to the discovery of (1)electrons (2)protons(3) atomic nucleus (4) neutrons
For 5 marks
Rutherford's alpha particle scattering experiment led to the discovery of :
(b) Electrons
(d) Neutrons
Assertion: The discovery of subatomic particles led to the failure of Dalton’s atomic theory.
Reason: An atom is made up of protons, neutrons and electrons.
