Lithium Li has a charge of plus 1 , and oxygen cap o has a charge of negative 2 Which is the chemical formula?

A lithium ion has a +1 charge, and an oxygen ion has a −2 charge. Two lithium ions give a total charge of +2, which balances the oxygen ion’s −2 charge, so the formula is Li₂O. This is choice A, “Li₂O.”

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