Question

an element x forms a chloride with the formula xcl2 what is the chemical formula of its phosphate and oxide​

Answer 1

Answer:

X valency = 2        Cl valency = 1

crossing the valencies and formulla = XCl2

similarly,

         X valency = 2          PO4 valency = 3            O valency = 2

crossing the valencies and formulla = X3(PO4)2 & X2O2 or XO

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Answer 2

Answer:

X valency = 2        Cl valency = 1

crossing the valencies and formulla = XCl2

similarly,

         X valency = 2          PO4 valency = 3            O valency = 2

crossing the valencies and formulla = X3(PO4)2 & X2O2 or XO