Explanation:Isotopesare defined as atoms of the same element but differ in the number ofneutronsin their nucleus where a number ofprotonsandelectronsremain the same.Ionsare defined as chemical species of an atom with an electrical charge.IO with a positive charge are calledcations, and ions with a negative charge are calledanions.Atomhas three subatomic particles:protons, electrons, neutronsAtomic number(Z)= Number ofprotonsNumberproton= Number ofelectrons(isoelectric neutral atom)Atomic mass (A)= Number ofprotons+ Number ofneutronsThe chemical symbol of an element X is written as:Where : Charge on ion = CLearn more about atomic mass and the atomic number here:brainly.com/question/11673503?referrer=searchResultsbrainly.com/question/2099804?referrer=searchResults...

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