An elementary particle with 0 charge and mass about equal to a proton; enters into the structure of the atomic nucleus.
A baryon with electric charge zero; it is a fermion with a basic structure of two down quarks and one up quark (held together by gluons). The neutral component of an atomic nucleus is made from neutrons. Different isotopes of the same element are distinguished by having different numbers of neutrons in their nucleus.
An elementary particle slightly heavier than a proton, with no electric charge.
uncharged protonlike particle of atom.
One of the three main subatomic particles, the others being the proton and the electron. The neutron is a composite particle, being made up of three quarks, and therefore belongs to the baryon group of the hadrons. Neutrons have about the same mass as protons but no electric charge, and occur in the nuclei of all atoms except hydrogen. They contribute to the mass of atoms but do not affect their chemistry.
For instance, the isotopes of a single element differ only in the number of neutrons in their nuclei but have identical chemical properties. Outside a nucleus, a free neutron is radioactive, decaying with a half-life of 11.6 minutes into a proton, an electron, and an antineutrino. The neutron was discovered by the British chemist James Chadwick 1932. + prikaži više