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What are the smallest sub atomic structure

User Sumiko
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Answer:

Electrons

Step-by-step explanation:

In an atom there would be three subatomic particles: Neutrons, electrons, protons. The smallest and lightest in terms of mass is electrons. This is because the nucleus is comprised of the protons and the neutrons, these have a greater mass than electrons as electrons has very little mass that can considered to be 0.

User IAfanasov
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