Polyatomic ions
Polyatomic ions have a systematic naming. The name must contain the participating Elements, ordered by the following rules:
- the electropositive Kation before the electonegative Anion, e.g. NaCL instead of ClNa, because Chlor is the partner to get the electron here.
- the parts are ordered by their element number, "lower" elements first.
- If the polyatomic ion consists of more than two elements, the ordering of the parts follows the structure in the molecule. SCN- instead of CNS-.
Prefixes
Here are some of the commonly used prefixes for naming of ions:
Peroxo- | oxygen replaced by Peroxo O-O |
Thio- | oxygen replaxed by Sulfur |