What is an α (alpha) particle?
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An α (alpha) particle is a doubly charged helium ion (He2+) containing two protons and two neutrons. It is formed by removing 2 electrons from helium atom.
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What is the contribution of the following in Atomic structure?
(a) Maharshi Kanada
(b) Democritus?
State Dalton's atomic theory.
What are the cathode rays? How are these rays formed?
What is the nature of a charge on
(i) cathode rays
(ii) anode rays?