Sulfate is a negative ion composed of the nonmetals sulfur and oxygen bus is itself not a metal or a nonmetal. The sulfate ion does not exist as a substance on its own. Its charge must be balanced by a positive ion the identity of that ion is variable.
Copper II sulfate is an ionic compound because it is formed by the electrostatic attraction between the positively charged copper ions and the negatively charged sulfate ions. Ionic bonds are typically formed between a metal and a nonmetal, whereas covalent bonds are formed between two nonmetal atoms sharing electrons.
Ferrous sulphate, or iron (II) sulphate has the formula FeSO4.
FeO is not a nonmetal; it is a compound composed of iron (a metal) and oxygen (a nonmetal).
The formula of the sulphate ion is SO42-
Hydrochloric acid is added to a solution being tested for sulphate ions to precipitate the sulphate as barium sulphate. This is a confirmatory test for the presence of sulphate ions in the solution because barium sulphate is insoluble and forms a white precipitate.
Copper II sulfate is an ionic compound because it is formed by the electrostatic attraction between the positively charged copper ions and the negatively charged sulfate ions. Ionic bonds are typically formed between a metal and a nonmetal, whereas covalent bonds are formed between two nonmetal atoms sharing electrons.
nonmetal
Nails are metal.
Ferrous sulphate, or iron (II) sulphate has the formula FeSO4.
nonmetal
nonmetal
FeO is not a nonmetal; it is a compound composed of iron (a metal) and oxygen (a nonmetal).
Sodium + Sulphate + Water = Sodium Sulphate + Water
The formula of the sulphate ion is SO42-
vanadium(I) sulphate, but as far as I am aware, this compound is unknown
Hydrochloric acid is added to a solution being tested for sulphate ions to precipitate the sulphate as barium sulphate. This is a confirmatory test for the presence of sulphate ions in the solution because barium sulphate is insoluble and forms a white precipitate.
Fluoride is the ion of fluorine, which is a nonmetal.