nucleons

Protons and neutrons

Nucleons are the particles that make up an atomic nucleus—protons and neutrons.

The term groups these two particle types together because they behave similarly within the nucleus despite their different charges.

The number of nucleons in an atom equals its mass number: Carbon-12 has twelve nucleons—six protons and six neutrons.

composition

quarks

Fundamental hadron components

mass · form factor

particles

baryons

Three-quark subatomic particles

  • hadronsQuark-containing composite particles
  • fermionsHalf-spin matter constituents
  • protonPositive nuclear particle

neutron · antiproton · antineutron · resonances · particle physics · CERN · LHC · scattering · cross-section

nuclear

magic numbers

Unexplained literal values in code

stellar

neutron star

Ultradense stellar remnant

magnetar

Opposites
atomic location

nucleonselectrons

Negative charges in atoms

electron cloud · valence electrons

particle mass/weight

nucleonselectrons

Negative charges in atoms

leptons · neutrinos · muons · elementary particles · photons

Family

nucleon, nucleosynthesis, nucleonics

Familiarity
Top 1,000,000
Profile
Used worldwide · Timeless · Rated G