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J.J. Thomson’s experiment demonstrated that
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- the e/m ratio of the cathode-ray particles changes when a different gas is placed in the discharge tube
- cathode rays are streams of negatively charged ions
- all the mass of an atom is essentially in the nucleus
- the e/m of electrons is much greater than the e/m of protons
Correct Option: B
Cathode rays are streams of negatively charged ions
