An electrically natural subatomic particle inside baryon family, having a mass 1,839 times that of the electron, stable whenever bound in an atomic nucleus, and achieving a mean time of about 1.0 × 103 moments as a free particle. It and proton type nearly the whole size of atomic nuclei. See Table at subatomic particle.
A subatomic particle creating part of the nucleus of an atom and having free; it really is a mixture of an up quark as well as 2 down quarks
an elementary particle with 0 cost and size about add up to a proton; enters to the framework of atomic nucleus