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March 29, 2017

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if k2O, SrO, and Al2O3 are all correct formulas, predict the formulas for the oxides of Rb, Mg, & Ga.

i think the answers are Rb2O, MgO,& Ga2O3 but im not sure why

  • chemistry - ,

    All are correct. Why?
    K2O means K is +1, Rb is in the same column so we predict +1 for it too; therefore, Rb is Rb2O. Same reasoning for Mg and Ga.

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