Which formula corresponds to Sodium Fluosilicate?

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Multiple Choice

Which formula corresponds to Sodium Fluosilicate?

Sodium fluosilicate is a salt built from the hexafluorosilicate anion [SiF6]2−. That anion has a 2− charge, so it is balanced by two Na+ ions to form a neutral compound, giving Na2SiF6. In this formula, silicon is +4 and each fluoride is −1; two sodium ions contribute +2, six fluorides contribute −6, and the total charge is +2 + (+4) − 6 = 0, which fits a stable salt. The other options represent different sodium compounds (sodium chloride, sodium sulfate, sodium fluoride) and do not contain the hexafluorosilicate unit.

Sodium fluosilicate is a salt built from the hexafluorosilicate anion [SiF6]2−. That anion has a 2− charge, so it is balanced by two Na+ ions to form a neutral compound, giving Na2SiF6. In this formula, silicon is +4 and each fluoride is −1; two sodium ions contribute +2, six fluorides contribute −6, and the total charge is +2 + (+4) − 6 = 0, which fits a stable salt. The other options represent different sodium compounds (sodium chloride, sodium sulfate, sodium fluoride) and do not contain the hexafluorosilicate unit.

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