Which of these is true?

Dalton assumed that atoms are made up of electrons, protons, and neutrons

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The alpha particles used in Rutherford's experiment are positively charged particles

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In Rutherford's alpha scattering experiment, all of the alpha particles passed through the gold foil.

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JJ Thomson determined the charge and mass of electrons

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Solution

The correct option is B
The alpha particles used in Rutherford's experiment are positively charged particles

The alpha particles used in Rutherford's experiment are positively charged particles, infact each one consists of 2 protons and 2 neutrons.

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α -

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