Question

Write a short notes on Discovery of electrons.​

Answer 1

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Explanation:

In the year 1897, J.J Thomson studied the properties of cathode rays through a cathode ray tube experiment and found that the cathode rays are a steam of very small, negatively charged particles. These particles are 1837 times lighter than a hydrogen atom and are present in all atoms. These particles were later named as electrons.

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Answer 2

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★ Discovery of electron

$\longrightarrow$ The existence of electron is an atom was saw by J.J. Thomsan in 1897.

$\longrightarrow$ He passed electricity at high voltage through a gas of very low pressure taken in a discharge tube. then stream of minute particles, where given out by the cathode, these stream of cathode rays. These stream of particles called cathode rays.

$\longrightarrow$ The mass and charge of cathode ray particles does not depend on the nature of gas in the discharge tube.

$\longrightarrow$ The cathode ray consists a small negatively charge called electron.

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