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Question

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


A

NaAIF

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B

Na3AIF5

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C

Na2AIF6

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D

Na2AlF2

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Solution

The correct option is B

Na3AIF5


Cryolite:

The chemical formula of cryolite is Na3AlF6

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 Na3AlF6. Hence, option (A) is the correct answer.


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