Sodium Fluosilicate is represented by which chemical formula?

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Multiple Choice

Sodium Fluosilicate is represented by which chemical formula?

The key idea is balancing charges between the hexafluorosilicate unit and sodium ions. Silicon bonds with six fluorides to form the hexafluorosilicate ion, SiF6^2−, which carries a −2 charge. Two Na+ ions are needed to balance that charge, giving Na2SiF6. Other common sodium compounds are different species (NaCl, Na2SO4, NaF), so the formula for sodium fluosilicate is Na2SiF6.

The key idea is balancing charges between the hexafluorosilicate unit and sodium ions. Silicon bonds with six fluorides to form the hexafluorosilicate ion, SiF6^2−, which carries a −2 charge. Two Na+ ions are needed to balance that charge, giving Na2SiF6. Other common sodium compounds are different species (NaCl, Na2SO4, NaF), so the formula for sodium fluosilicate is Na2SiF6.

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