what is the difference between oxygen atom and oxygen ion in terms of number of electrons and their atomic structures

Dear student,

Oxygen atom is made up of 8 protons,8 neutrons,8electrons whereas an oxygen atom when gains an electron which is total 9, then it becomes negatively charged and is known as a anion and on the other hand, when oxygen atom loses an electron, which is total of 7, it becomes positively charged and is known as an cation
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