Question

change mass and discoverer of electron, proton, neuton​

Answer 1

There would be four protons and two electrons in the nucleus in the helium example to yield a mass of 4 but only a charge of 2. Also, Rutherford put forward the idea that a particle with mass, but no charge, could exist. He called it a neutron and imagined it as an electron and a paired proton.

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Answer 2

Answer:

please write a proper question