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 are the cathode rays? How are these rays formed?
State Dalton's atomic theory.
What is the contribution of the following in Atomic structure?
(a) Maharshi Kanada
(b) Democritus?
What is the nature of a charge on
(i) cathode rays
(ii) anode rays?