Question

Write the symbols for the ions and the correct formula for the ionic compound formed by each of the following:

a. calcium and chlorine

b. rubidium and bromine

c. sodium and phosphorus

d. magnesium and oxygen

Short answer

Part a. ${\mathrm{Ca}}^{2+},{\mathrm{Cl}}^{-},{\mathrm{CaCl}}_2$

Part b. ${\mathrm{Rb}}^{+},{\mathrm{Br}}^{-},\mathrm{RbBr}$

Part c. ${\mathrm{Na}}^{+},{\mathrm{P}}^{3-},{\mathrm{Na}}_3\mathrm{P}$

Part d. ${\mathrm{Mg}}^{2+},{\mathrm{O}}^{2-},\mathrm{MgO}$

Step-by-step solution

Part (a) Step 1: Given Information

The symbols for the ions and the correct formula for the ionic compound formed by calcium and chlorine.

Part (a) Step 2: Explanation 

The symbols for the ions and the correct formula for the ionic compound formed is

calcium -${\mathrm{Ca}}^{2+}$

chlorine - ${\mathrm{Cl}}^{-}$

ionic compound -${\mathrm{CaCl}}_2$

Part (b) Step 1: Given Information

The symbols for the ions and the correct formula for the ionic compound formed by rubidium and bromine

Part (b) Step 2: Explanation 

The symbols for the ions and the correct formula for the ionic compound formed is

rubidium -$R{b}^{+}$

bromine -$B{r}^{-}$

ionic compound -$RbBr$

Part (c) Step 1: Given Information

The symbols for the ions and the correct formula for the ionic compound formed by sodium and phosphorus

Part (c) Step 2: Explanation 

The symbols for the ions and the correct formula for the ionic compound formed is

sodium-$N{a}^{+}$

phosphorus -$P^{3-}$

ionic compound -$N{a}_{3}P$

Part (d) Step 1: Given Information

The symbols for the ions and the correct formula for the ionic compound formed by magnesium and oxygen

Part (d) Step 2: Explanation 

The symbols for the ions and the correct formula for the ionic compound formed is

magnesium-$M{g}^{2+}$

oxygen -$O^{2-}$

ionic compound -$MgO$