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Ionic Compounds: Chemical Formula

What is the c...

Question

What is the chemical formula of Sodium carbonate?

A

N a C O_{3}

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B

N a (C O_{3})_{2}

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C

N a_{2} C O_{3}

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D

N a_{2} (C O_{3})_{3}

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Solution

The correct option is B $N a_{2} C O_{3}$
The valency of sodium is $+ 1$ and that of carbonate ion is $- 2$ . To form chemical formula valency will cross multiply and will result in $N a_{2} C O_{3}$ .

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