Naming complex ions

[Lauren Hekman 1A]

When do you know when to use the suffix "bis" after an element? For example, chlorobis? Why wouldn't it be chloride?

[Millie Unti 4H]

If a ligand already has a prefix in the name, like ethylenediamine, then you must use the other prefixes if there is more than one ethylenediamine. For example, (en)2 is bisethylenediamine.

[Ronald Yang 2F]

The "bis" in "chlorobis" is probably describing some other ligand rather than Cl. Also, you would use the "bis" and "tris" kind of prefixes for polydentate ligands as well.