Atomic number and mass number of ordinary atoms, using helium as example

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Atomic number and mass number of ordinary atoms, using helium as an example. The atomic number (Z) is also the number of protons (np). The Mass number (A) is the total number of neutrons and protons.

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Photo credit: © PeterHermesFurian / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 4, atom, atomic, atoms, background, bohr, charge, chemical, chemistry, composition, configuration, electron, element, gas, helium, illustration, isolated, isotope, mass, model, neutron, noble, np, nuclear, nucleon, nucleus, number, orbital, ordinary, physics, proton, research, science, shell, structure, symbol, vector, white