What subatomic particle has the least mass?

Answer

There are three types of subatomic particles. Protons and neutrons are found in the nucleus and have the greatest mass. Electrons are found orbiting the nucleus and have the least mass.
Q&A Related to "What subatomic particle has the least mass?"
electron. No, wrong. The. electron neutrino. has the least nonzero mass, it is so small the exact value has not been determined. The. photon. and. graviton. both have zero mass.
http://wiki.answers.com/Q/Which_subatomic_particle...
Electrons: mass = 1.1 E -29 g or 0.000 549
http://www.chacha.com/question/which-subatomic-par...
Protons and neutrons have masses of about 900 MeV (E really does equal MC squared, and very small masses are commonly expressed in energy units) They're the big ones. Electrons have
http://answers.yahoo.com/question/index?qid=201111...
Atomic mass is the number of PROTONS and NEUTRONS in the nucleus. The masses of A, B (which is an ion not an atom) and D are not equal to the mass of an O atom as they are A a different
http://answers.yahoo.com/question/index?qid=201008...
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