No. An oxyanion is a polyatomic negative ion that contains oxygen. Ammonium is a cation (positive ion) and does not contain oxygen.
The oxyanion of chlorine that contains the most oxygen atoms is perchlorate (ClO4-).
Ammonium Dichromate: (NH4)2Cr2O7. The subscript on Ammonium (NH4) is 2.
The subscript for ammonium in ammonium dichromate is (NH4)2. This means there are two ammonium ions present in the compound.
Ammonium ion (NH4+) is present in all ammonium salts (eg. ammonium chloride, or ammonium nitrate), and in smaller amounts in an ammonia (NH3) solution.
Ammonium bisulfite is a chemical compound with the formula (NH4)HSO3, commonly used as a reducing agent. Ammonium bisulphide is a compound with the formula (NH4)2S, used in metal extraction processes. Ammonium bisulphate, or ammonium hydrogen sulfate ((NH4)HSO4), is an ammonium salt commonly used as a fertilizer and acidifier.
E: Sulfate is an example of an oxyanion. Oxyanions are ions composed of an element bonded to oxygen. Sulfate has a central sulfur atom bonded to four oxygen atoms.
An oxyanion is in the form of AxOy, where A is a chemical or polyatomic ion, and O is an oxygen.
The oxyanion of phosphoric acid is called phosphate.
Formula: ClO-
The symbol for the oxyanion perchlorate ion is ClO4-.
The oxyanion of chlorine that contains the most oxygen atoms is perchlorate (ClO4-).
Chlorite Ion
Chlorate ion
This anion is called metavanadate.
Formula: ClO-
No, the name of an oxyanion is not based on the amount of a metal in the ion. The name of an oxyanion is determined by the oxidation state of the element and the number of oxygen atoms in the ion. The metal in the ion may play a role in determining the charge or oxidation state of the element, but it does not directly determine the name of the oxyanion.
A xenate is an oxyanion of xenon, chemical formula HXeO4.