Chemical formula for sulfur is S not S2.
The chemical formula for sodium selenide is Na2Se.
Calcium sulfide has the chemical formula CaS.
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NaBr would be a formula unit as all sodium (Na) compounds are ionic.
potassium nitrate
PbS2
This formula is Na3PO4.
Na2+1O11-
Chemical formula for sulfur is S not S2.
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The chemical formula of sodium sulfideis Na2S. The sodium cation is Na+ and the sulfide anion is S2-.
Ferrous is the traditional name of the iron (II) ion. (Fe 2+) The formula for ferrous sulfide is FeS since sulfur has a charge of -2.
The chemical formula for Fe3 combined with S2 is Fe2S3.
3S2- + 2Sc3+ --> Sc2S3name: Scandium sulfide
The chemical formula for sodium selenide is Na2Se.
Yes they are formula: S2-