science

Which statement about subatomic particles is true?
A. Protons, neutrons, and electrons all have about the same mass.
B. Unlike protons or neutrons, electrons have no mass.
C. Neutrons have no charge and no mass.
D. An electron has far less mass than either a proton or neutron.

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  1. i chose a

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  2. Electrons have the smallest mass of any subatomic particle
    Protons and electrons have exactly opposite charges
    Protons and neutrons have approximately the same mass
    They can have antiparticles
    They have magnetic and electric properties
    They have a lifetime
    They have a spin.

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