Question

explain discovery of electrons.​

Answer 1

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In 1897, J. J. Thomson while studying discharge tube phenomenon found a stream of tiny particles. These rays produced from the cathode of a discharge tube move towards an anode in straight lines are called cathode rays. They consist of negatively charged particles called electrons. They are 1837 times lighter than a hydrogen atom and are present in all atoms.

Answer 2

Answer:

What is an Electron?

The electron is a low-mass, negatively charged particle. As such, it can easily be deflected by passing close to other electrons or the positive nucleus of an atom.

The electron was the first fundamental particle that was discovered. The credit for the discovery of the electron and its properties goes to J.J. Thomson based on his experiments carried out in a discharge tube. He suggested that electrons are necessary constituents of all atoms. J.J. Thomson carried out experiments by taking a gas at low pressure of 0.01mm Hg in a discharge tube.