The formula of sodium tungstate is $N a_{2} W O_{4}$ and that of lead phosphate is $P b_{3} (O P_{4})_{2}$ . What is the formula of lead tungstate ?

P b W O_{4}

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P b_{2} (W O_{4})_{3}

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P b_{3} (W O_{4})_{2}

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P b_{3} (W O_{4})_{4}

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Solution

The correct option is A $P b W O_{4}$
Charge on $W O_{4}$ is $- 2$ and the charge on $P b$ is also $+ 2$ so the formula for Lead tungstate will be $P b W O_{4}$

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