These groups of atoms are called polyatomic ions. Polyatomic ions each carry a specific charge, which is determined by their numbers of.
Good question, and one I have heard frequently in teaching Freshman Chemistry . The first rule is that you memorize them. However, I have made a few.
The prefix poly- means many, so a polyatomic ion is an ion that contains more . When drawing Lewis dot structures, the overall charge on a polyatomic ion is.
A polyatomic ion, also known as a molecular ion, is a charged chemical species ( ion) composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit. The prefix poly- means " many," in Greek, but even ions of two atoms are.
Apparantly, your question is phrased: Given the following formulae for these salts and using the rule of charge balance, determine the charge.
These ions are separated by charge on the ion into four (4) different tables and listed alphabetically within each table. For each polyatomic ion, the name.