Name: Schrodinger's Wave Equation
Uploaded: 2019-07-19
Duration: 6 min 28 s
Description: The Schrödinger equation is an equation on linear partial differential that describes the wave function in quantum mechanics. It helps to understand the stru...

Question

How was electron discovered ?

Accepted Answer

Discovery of Electron

Cathode rays discharge tube experiment :- J. J. Thomson constructed a glass tube which was partially evacuated i.e. much of the air was pumped out of the tube. Then he applied a high electrical voltage $(10000 V)$ between two electrodes at either end of the tube. He detected that a stream of particle (ray) was coming out from the negatively charged electrode (cathode) to positively charged electrode (anode). This ray is called cathode ray and the whole construction is called cathode ray tube. The schematic of a cathode ray tube is given in figure.

Particle (ray) was coming out from the negatively charged electrode (cathode) to positively charged electrode (anode). The negatively charged particles is known as electron.

Nature of cathode rays does not depend on (i) material of electrode (ii) Nature of gas taken in the discharge tube.

The charge of an electron was measured by R. Millikan in Oil drop experiment. Charge of an electron is $- 1.6 \times 10^{- 19} C$ Mass of an electron is $9.1 \times 10^{- 31} Kg$

How was electron discovered ?

Important Questions on Structure of Atom

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