Which property of an element is always a whol | vedclass

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(C) Atomic weight is the mass of a single atom of an element,which can be fractional due to the existence of isotopes.Equivalent weight is the mass of

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Atomic number

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(C) Atomic weight is the mass of a single atom of an element,which can be fractional due to the existence of isotopes.Equivalent weight is the mass of an element that reacts with or displaces $1 \ g$ of hydrogen or $8 \ g$ of oxygen,which can also be fractional.Atomic volume is the volume occupied by one mole of an atom,which is not necessarily a whole number.Atomic number is defined as the number of protons present in the nucleus of an atom. Since protons are discrete particles,the count must be an integer. Therefore,the atomic number is always a whole number.

Which property of an element is always a whole number?

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