What do neutrons contribute to the atom

The number of neutrons in a nucleus affects the mass of the atom but not its chemical properties. Thus, a nucleus with six protons and six neutrons will. They therefore contribute to the mass of an atom, but not to its electric charge. Normal hydrogen atoms do not have neutrons in their nuclei, although there. Physicists' models of nuclear structure are tuned to more common nuclei with The atomic nucleus consists of protons and neutrons held together by the.