In this model, nuclei are pictured as loose aggregates of nucleons (protons and neutrons) each of which, according to the quark model, has three quarks locked inside it.
The internal structure of the nucleon is fundamental to nuclear physics.
A classic series of such experiments performed at SLAC in the 1960s and 1970s was crucial in convincing researchers that they were seeing quarks inside nucleons.
An alpha particle is a heavy nucleon, which is actually the nucleus of a helium atom.
You'll then have to use that information to answer questions regarding the number of protons, neutrons, electrons or nucleons (particles in the nucleus) that an atom of that element contains.
Definition of nucleon in US English:
nucleon
nounˈn(y)o͞oklēˌänˈn(j)ukliˌɑn
Physics
A proton or neutron.
〔物理〕核子（指质子或中子）
Example sentencesExamples
The internal structure of the nucleon is fundamental to nuclear physics.
In this model, nuclei are pictured as loose aggregates of nucleons (protons and neutrons) each of which, according to the quark model, has three quarks locked inside it.
You'll then have to use that information to answer questions regarding the number of protons, neutrons, electrons or nucleons (particles in the nucleus) that an atom of that element contains.
An alpha particle is a heavy nucleon, which is actually the nucleus of a helium atom.
A classic series of such experiments performed at SLAC in the 1960s and 1970s was crucial in convincing researchers that they were seeing quarks inside nucleons.