Alpha particles were fast-moving and positively charged particles emitted by radioactive elements. They were relatively massive and had a high kinetic energy.
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Alpha particles were fast-moving and positively charged particles emitted by radioactive elements. They were relatively massive and had a high kinetic energy.
The alpha particles in Rutherford’s experiment were helium nuclei, each consisting of two protons and two neutrons. They were emitted from a radioactive source with high energy and positively charged.