Question

single - charge cations
write the name of each of the following compounds

1. na₂s
2. al₂o₃
3. nacl
4. kbr
5. znbr₂

write the chemical formula for each of the given names

1. aluminum chloride
2. zinc oxide
3. barium bromide
4. lithium nitride
5. potassium sulfide

Explanation:

Step1: Identify cation and anion

For naming compounds, identify metal (cation) and non - metal (anion). For formula writing, know the charges of ions.

Step2: Name ionic compounds

Name the cation first, then the anion with its ending changed to -ide. E.g., for $Na_2S$, sodium is the cation and sulfur becomes sulfide.

Step3: Write chemical formulas

Use the criss - cross method. For aluminum chloride, aluminum ($Al^{3 + }$) and chloride ($Cl^{-}$), so the formula is $AlCl_{3}$.

Answer:

1. Sodium sulfide
2. Aluminum oxide
3. Sodium chloride
4. Potassium iodide
5. Zinc bromide
6. $AlCl_{3}$
7. $ZnO$
8. $BaBr_{2}$
9. $Li_{3}N$
10. $K_{2}S$