Question

Write a short note on discovery of electron. ​

Answer 1

❥︎The electron was discovered in 1896, by the British physicist J. J. Thomson, using a cathode rays while doing discharge tube experiments. Thomson also determined e/m, ratio of the charge e to the mass m of the material particle which constituted these rays. ... These protons add the overall positive charge of an atom.

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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