Naming Ionic Compounds With Transition Metals. Naming ionic compounds with polyatomic ions and metals with fixed charges only. Usually, the positively charged portion consists of metal cations and the negatively charged portion is an anion or polyatomic ion.
Many transition metals exist as more than one type of cation. Look at the 2 ionic components of the compound. The charge of the metal ion must be written in the name of the compound with a roman numeral.
Worksheet 5.1 writing and naming ionic compounds with polyatomic ions and transition metals section a write the name of the ionic compounds containing polyatomic ions (be careful transition metals may have roman numerals and nicknames) 1.
This is because transition metals can have more than one valence (or charge). Usually, the positively charged portion consists of metal cations and the negatively charged portion is an anion or polyatomic ion. If a coordination compound is ionic, name the cation first and the anion second, in accordance with the usual nomenclature. We would call this cobalt (iii) sulfide.