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The smallest particle is the muon neutrino. The subatomic particles are not measured in size; they are measured in energy. The muon neutrino has an energy of less than 0.170 MeV/c2.

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13y ago
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13y ago

Electron. An electron has a mass of 9.11 x 10-28 grams.

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Q: What is the smallest whole particle on this planet?
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