Chemical formula of cryolite is........…

NaAIF

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Na₃AIF₅

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Na₂AIF₆

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Na₂AlF₂

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Solution

The correct option is B
Na₃AIF₅

Cryolite:
The chemical formula of cryolite is ${Na}_{3} {AlF}_{6}$
Cryolite is one of the major ores of aluminium. The melting temperature of the pure cryolite is 1012 °C (1285 K). It readily dissolves aluminium oxide to facilitate the extraction of aluminium by electrolysis.
Final Answer: Chemical formula of cryolite is ${Na}_{3} {AlF}_{6} .$ Hence, option (A) is the correct answer.

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