Question

Define atomic mass, atomic number, mass number and isotones.​

Answer 1

Answer:

we don't know........................

Answer 2

Answer:

atomic mass - the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.

atomic number - The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus.

mass number - the total number of protons and neutrons in a nucleus.

isotones - Isotone, any of two or more species of atoms or nuclei that have the same number of neutrons.

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