Question

If the formula for a compound is represented by XY2 and the charge on the Y ion is -2, what is the charge in the X ion?

Answer 1

4+

Answer 2

If the compound has no overall charge, and Y2 gives you (-2)x2 = -4 charge, then the charge for the X ion must be +4, so that the overall charge on the compound is 0:
-4 + 4 = 0

Answer 3

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