What Are Four Properties Of Electrons That Were Determined Based On The Experiments Of Thomson And Millikan?

I need to know the answer to that question

They are:

1.textElectrons own a mass approximately 1/2000th of the mass of a hydrogen atom.text

2.textElectrons have a charge of 1.602*10^-19 C (Coulombs)manuscript

3.textThe calculated mass of an electron is 9.109*10^-31 kg. (approximately 1/1837th of a mass of a hydrogen atom.text

4.text Electrons are negatively charged particle.text

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