Nomenclature Chemistry Example 4

Solution

1. 1
   (a) $\text{FeCl}_3$: Iron has variable charge. With 3 chloride ions ($-1$ each), iron is $+3$. Name: iron(III) chloride. Roman numerals indicate the metal's charge.
2. 2
   (b) $\text{N}_2\text{O}_5$: Two non-metals — use Greek prefixes. Name: dinitrogen pentoxide. Prefixes: di- = 2, penta- = 5.
3. 3
   (c) $\text{Cu}_2\text{O}$: Copper has variable charge. With one oxide ($-2$) and two copper atoms, each copper is $+1$. Name: copper(I) oxide.