True: Protons have a mass of 1, Protons have a charge of +1, Electrons are 2,000 times small than protons, Neutrons and protons are termed 'nucleons', Isotopes have the same number of protons, Ar is an average mass based on the abundance of isotopes, An atom of lithium has 3 protons and 3 electrons, The electron configuration of an Na ion is 2.8, False: Electrons have a mass of -1, Neutrons do not contribute to the mass of an atom, Electrons are found in the nucleus, Isotopes have the same number of neutrons, Ar is always a whole number, The mass number of argon is 18, The electron configuration for Mg is 2.10, Metals form negative ions,

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