

MCQOPTIONS
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1. |
THE_MOLECULAR_FORMULA_OF_CRYOLITE_IS?$ |
A. | Al<sub>2</sub>O<sub>3</sub> |
B. | Fe<sub>2</sub>O<sub>3</sub> |
C. | Na<sub>3</sub>AlF<sub>6</sub> |
D. | Na<sub>3</sub>MgI<sub>6</sub> |
Answer» D. Na<sub>3</sub>MgI<sub>6</sub> | |