Proton: a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
Neutron: a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
Electron: a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
Element: a part or aspect of something abstract, especially one that is essential or characteristic.
Atomic number: the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
Chemical symbol: the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
Physical property: a physical property is any property that is measurable, whose value describes a state of a physical system
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