Neutrons, Protons, and Electrons are fundamental sub-atomic particles that are the constituents of atoms. A Deuteron is the nucleus of a deuterium atom, which consists of one proton and one neutron bound together. It is a composite particle, not a fundamental sub-atomic particle itself.
Which one of the following is not a sub- atomic particle ?
Asked in UPPCS Prelims 2008 · Topic: Nuclear Physics (Elementary particles: classification (leptons, hadrons, quarks), fundamental interactions (strong, weak, electromagnetic, gravitational).)
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