Each of these names has one mistake. Find it and write the correct name…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Each of these names has one mistake. Find it and write the correct name.
- tetraaminecopper(II) sulphate for
- potassium hexacyanidoiron(II) for
- dichloridotetraamminecobalt(III) chloride for
Need a reminder? The key ideaShow
Names are built in this order: cation, then anion. Inside the complex: ligands in alphabetical order (prefixes ignored), then the metal, then the oxidation state in Roman numerals. An anionic complex ends in -ate (ferrate, cuprate, argentate, aurate). Anionic ligands end in -o. is ammine and is aqua.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. The first name. The ligand is ammine, with two m. The correct name is tetraamminecopper(II) sulphate.
Step 2. The second name. The complex is an anion, so the metal gets the ending -ate, and iron becomes ferrate. The correct name is potassium hexacyanidoferrate(II).
Step 3. The third name. The ligands must be in alphabetical order. Ammine comes before chlorido, and the prefixes do not count. The correct name is tetraamminedichloridocobalt(III) chloride.
Check. Each correct name keeps the oxidation state in Roman numerals and the cation first.
Discussion (0)
Log in to join the discussion.
Loading…