Question: 8) Write the formulas for the following ionic compounds: a. sodium oxide b. iron sulfide (containing the Fe2+ ion) c. cobalt sulfate (containing the Co3+

8) Write the formulas for the following ionic compounds: a. sodium oxide b. iron sulfide (containing the Fe2+ ion) c. cobalt sulfate (containing the Co3+ and SO42 ions) d. barium fluoride (Hint: where does barium exist on periodic table?)

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