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For each of the three ionic compounds, select which main group X belongs to. a.)X3PO4 b.)CaX2 c.)X2(SO4)3
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For each of the three ionic compounds, select which main group X belongs to. a.)X3PO4 b.)CaX2 c.)X2(SO4)3

User Quinette
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a) First because it has a valency of +1

b) Seventh because it has a valency of -1

c) Third because it has a valency of +3
User Barneytron
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