Chapter 7, Problem 116A

Interpretation Introduction

Interpretation:

The two compounds that can be formed using the available ions in the given figure needs to be determined.

Concept introduction:

Ions are charged atoms or molecules that have an unequal amount of protons or electrons. Positively charged ions are called a cation and negatively charged ions are called anions. 

Answer to Problem 116A

Two compounds are calcium sulfide (CaS) and sodium fluoride (NaF)

Explanation of Solution

The given ions are ${\text{Al}}^{3+},{\text{Ca}}^{2+},{\text{Na}}^{+},{\text{F}}^{-},{\text{N}}^{3-}\text{and}{\text{S}}^{2-}$. Ionic compounds are formed from the charges add up to zero make neutral species. To make aluminum nitrate (AlN), ${\text{Al}}^{3+}\text{and}{\text{N}}^{3-}$ combine in 1:1 ratio and to make sodium fluoride (NaF), ${\text{Na}}^{+}\text{and}{\text{F}}^{-}$ combine in 1:1 ratio. To make calcium sulfide (CaS), ${\text{Ca}}^{2+}\text{and}{\text{S}}^{2-}$ combine in 1:1 ratio.

Conclusion

To make sodium fluoride (NaF), ${\text{Na}}^{+}\text{and}{\text{F}}^{-}$ combine in 1:1 ratio and to make calcium sulfide (CaS), ${\text{Ca}}^{2+}\text{and}{\text{S}}^{2-}$ combine in 1:1 ratio.