Formula of calcium hydroxide is Ca(OH)2 and zinc phosphate is Zn3(PO4) – InterviewSolution

1.	Formula of calcium hydroxide is Ca(OH)2 and zinc phosphate is Zn3(PO4)2. Then write the formula to calcium phosphate. (OR) Formula of calcium hydroxide is Ca(OH)2 and zinc phosphate is Zn3(PO4)2. Then write the valencies of calcium and phosphate and then write the formula of calcium phosphate.
Answer» Formula of calcium hydroxide is Ca(OH)₂. From criss-cross method we know that the valency of calcium is 2 i.e., Ca⁺² and hydroxide is 1 i.e., OH^- . Formula of zinc phosphate is Zn₃(PO₄)₂. Valency of Zn is 2 i.e., Zn⁺² and valency of phosphate is 3 i.e., P\(O_4^{-3}\) . Now the formula of calcium phosphate according to criss-cross method is Ca₃(PO₄)₂.

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