The discovery of protons and electrons most directly refuted or replace the idea that - atoms contain a nucleus

- the Atom is indivisible

- the atom is electrically neutral

- the atom resembles plum pudding

The atom resembles plum pudding

Explanation:

The discovery of the electron in 1897 by J. J Thomson and the proton in 1917 by Rutherford most directly refuted or replace the idea that the atom resembles plum pudding.

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