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• Atomic number: The number of protons in the nucleus of an atom of the element.
• Atomic mass: The average mass of an atom of the element, taking into account the different isotopes.
• Symbol: A one- or two-letter abbreviation for the element.
• Electron configuration: The distribution of electrons in the atomic orbitals.
• Oxidation state: The number of electrons that an atom has gained or lost in a chemical reaction.
• Electronegativity: The measure of the ability of an atom to attract electrons.
• Ionic radius: The radius of an ion.
• Covalent radius: The radius of an atom in a covalent bond.
• Atomic radius: The radius of an atom.
• Melting point: The temperature at which a substance changes from a solid to a liquid.
• Boiling point: The temperature at which a substance changes from a liquid to a gas.
• Density: The mass of a substance per unit volume.