The proton and neutron
Protons and neutrons have near identical mass. One will not have to account for the difference in mass in most calculations.
neutrons and protons
Particles of similar mass are often contained within atomic nuclei, where protons and neutrons reside. These nucleons have comparable masses and are held together by the strong nuclear force. Additionally, in particle physics, similar mass particles can be found in various subatomic particle families or groups, such as mesons and baryons, which are composed of quarks.
alpha particles consist of two protons and two neutrons (helium nucleus) logically one neutron can not have a larger mass than two neutrons and two other subatomic particles of a similar mass
Protons and neutrons
Atomic mass and molar mass are similar concepts but not the same. Atomic mass refers to the average mass of an atom of an element, while molar mass is the mass of one mole of a substance. The mass number of particles can be the same in certain cases, such as isotopes of the same element which have the same number of protons and different numbers of neutrons.
Particles of similar mass, such as neutrons and protons, are collectively referred to as nucleons. These nucleons are found in the nucleus of an atom and are held together by the strong nuclear force. While protons carry a positive charge, neutrons are electrically neutral, contributing to the overall mass of the atom without affecting its charge.
Particles of similar mass are typically contained within systems or structures that can include atomic nuclei, molecules, or even larger aggregates like clusters of matter. In atomic and subatomic contexts, they can be found within electromagnetic or gravitational fields that influence their behavior and interactions. These particles may also exist in states of matter such as solids, liquids, or gases, where their mass influences properties like density and phase transitions.
Proton and neutron have similar mass, but not identical.
Alpha particles are helium nuclei and consist of two protons and two neutrons. Their electric charge is +2 (+1 from each proton), and their mass number is 4, one for each proton and neutron. To describe their mass in other ways, it is 4.001506179125 atomic mass units, or 6.64465675 x 10-25 kg.
No Gamma Rays do not have mass. All electromagnetic radiation has no mass.
According to the principle of mass-energy equivalence (E=mc^2), energy and mass are interchangeable. In theory, energy can be created without mass, such as in the case of virtual particles popping in and out of existence in quantum mechanics. These particles have energy but no permanent mass.