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Question
Which from following is a formula of cryolite?
Options
BaSO4
Na3AlF6
Ca3(PO4)2
CaF2
MCQ
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Solution
Na3AlF6
Explanation:
Cryolite is the mineral sodium hexafluoroaluminate, formula Na3AlF6. It was historically used as a flux/electrolyte in aluminium smelting because alumina dissolves readily in molten cryolite, lowering the melting point of the bath.
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Occurrence of Elements of Groups 16, 17 and 18
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