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(C) The correct chemical formula is $BiPO_4$ (Bismuth phosphate).In $BiPO_4$,Bismuth $(Bi^{3+})$ and Phosphate $(PO_4^{3-})$ are both trivalent,so the

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$BiPO_4$

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(C) The correct chemical formula is $BiPO_4$ (Bismuth phosphate).In $BiPO_4$,Bismuth $(Bi^{3+})$ and Phosphate $(PO_4^{3-})$ are both trivalent,so they combine in a $1:1$ ratio.In option $(A)$,Calcium $(Ca^{2+})$ is bivalent and Chlorine $(Cl^-)$ is monovalent,so the correct formula should be $CaCl_2$.In option $(B)$,Sodium $(Na^+)$ is monovalent and Sulphate $(SO_4^{2-})$ is bivalent,so the correct formula should be $Na_2SO_4$.In option $(D)$,Sodium $(Na^+)$ is monovalent and Sulphur $(S^{2-})$ is bivalent,so the correct formula should be $Na_2S$.

Which of the following represents a correct chemical formula? Name it.

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