Polyatomic ions list - An ion is made up of two or more atoms, it can be referred to as a polyatomic ion or a molecular ion. If an ion is made up of only one type of atom it can be referred to as an atomic ion or a monatomic ion.

These polyatomic ions are extremely common in chemistry and thus it is important to be able to both recognize and name them. While there are many such ions in the world, you are responsible for knowing the ions listed in the following tables.

2014年9月27日 · This polyatomic ions list contains many common polyatomic ions grouped by charge. Each entry contains the ion's name, molecular formula and chemical structure.

POSITIVE POLYATOMIC IONS TABLE OF POLYATOMIC IONS H2PO4 – HCO3 – HC2O4 – HSO4 – HS– HSO – OH– ClO– IO3 – HPO4 2– NO3 – NO2 – SiO4 4– hydrogen carbonate hydrogen oxalate hydrogen sulfate hydrogen sulfide hydrogen sulfite hydroxide hypochlorite iodate nitrate nitrite orthosilicate monohydrogen phosphate dihydrogen ...

Table \(\PageIndex{1}\) lists the ion names and ion formulas of the most common polyatomic ions. For example, \(\ce{NO_3^{−}}\) is the nitrate ion; it has one nitrogen atom and three oxygen atoms and an overall −1 charge.

Common Polyatomic Ions Name(s) Formula Name(s) Formula ammonium NH4 + acetate CH3COO-C2H3O2-bromate BrO3-carbonate CO3 2-chlorate ClO3-chlorite ClO2-chromate CrO4 2-cyanide CN-dichromate Cr2O7 2-hydrogen carbonate bicarbonate HCO3-hydrogen sulfate bisulfate HSO4-hydrogen phosphate biphosphate HPO4 2-hydroxide OH-

Common Polyatomic Ions (Alphabetical order by ion name) NOTE:-ite ending means one less oxygen than the -ate form. PREFIXES: per- = one more oxygen than -ate hypo- = one less oxygen than –ite . Ion Name