Q.6.152 - An Introduction to General, Organic, and Biological Chemistry

Question

Classify each of the following as ionic or molecular, and name each. 

a. ${\mathrm{FePO}}_3$

b.${\mathrm{Cl}}_2{\mathrm{O}}_7$

c. ${\mathrm{Ca}}_3{\left({\mathrm{PO}}_4\right)}_2$

d. ${\mathrm{PCl}}_3$

e. $\mathrm{Al}{\left({\mathrm{ClO}}_2\right)}_3$

f. $\mathrm{Pb}{\left({\mathrm{C}}_2{\mathrm{H}}_3{\mathrm{O}}_2\right)}_2$

g. ${\mathrm{MgCO}}_3$

Step-by-Step Solution

Answer

a. ionic, Iron (III) phosphite

b. Molecular, Dichlorine heptoxide 

c. Ionic, Calcium phosphate

d. Molecular, Phosphorus trichloride 

e. Ionic, Aluminum chlorite

f. Ionic, Lead (III) acetate

g. Ionic, Magnesium carbonate

Step 1: Part (a) Given Information

To determine whether the compound is ionic or molecular and its name. 

Step 2: Part (a) Explanation

• The name of ${\mathrm{FePO}}_3$is Ferric(III) phosphite.
• It is an ionic compound that is composed of Ferric ion$\left({\mathrm{Fe}}^{3+}\right)$ and phosphite ion$\left({{\mathrm{PO}}_3}^{3-}\right)$.

• In ionic compounds, the ions i.e., cation and anion are held together by strong attractive forces.

Step 1: part (b) Given information

To determine whether the compound is ionic or molecular and its name. 

Step 2: Part (b) Explanation

• The name of the compound ${\mathrm{Cl}}_2{\mathrm{O}}_7$ is Dichlorine heptaoxide.
• It is composed of two chlorine and seven oxygen atoms.
• It is a molecular compound that is covalent in nature. 

• Molecular compounds are inorganic compounds that form discrete molecules. It represents the actual number of atoms in a compound.

Step 1: Part (c) Given Information

To determine whether the compound is ionic or molecular and its name. 

Step 2: Part (c) Explanation

• The name of the compound ${\mathrm{Ca}}_3{\left({\mathrm{PO}}_4\right)}_2$ is Calcium phosphate.
• It is an ionic compound that is composed of Calcium ion$\left({\mathrm{Ca}}^{2+}\right)$ and phosphate ion$\left({{\mathrm{PO}}_4}^{3-}\right)$.

• In ionic compounds, the ions i.e., cation and anion are held together by strong attractive forces.

Step 1: Part (d) Given Information

To determine whether the compound is ionic or molecular and its name. 

Step 2: Part (d) Explanation

• The name of the compound ${\mathrm{PCl}}_3$ is Phosphorus trichloride.

• It is composed of three chlorine and one phosphorus atom.
• It is a molecular compound that is covalent in nature. 

• Molecular compounds are inorganic compounds that form discrete molecules. It represents the actual number of atoms in a compound.

Step 1: Part (e) Given information

To determine whether the compound is ionic or molecular and its name. 

Step 2: Part (e) Explanation

• The name of the compound $\mathrm{Al}{\left({\mathrm{ClO}}_2\right)}_3$ is Aluminum chlorite.
• It is an ionic compound that is composed of Aluminum$\left({\mathrm{Al}}^{3+}\right)$ and chlorite ions$\left({{\mathrm{ClO}}_2}^{-}\right)$.
• In ionic compounds, the ions i.e., cation and anion are held together by strong attractive forces.

Step 1: Part (f) Given information

To determine whether the compound is ionic or molecular and its name. 

Step 2: Part (f) Explanation

• The name of the compound $\mathrm{Pb}{\left({\mathrm{C}}_2{\mathrm{H}}_3{\mathrm{O}}_2\right)}_2$ is Lead (III) acetate.
• It is an ionic compound that is composed of Lead ion $\left({\mathrm{Pb}}^{2+}\right)$ and acetate ion $\left({\mathrm{C}}_2{\mathrm{H}}_3{{\mathrm{O}}_2}^{-}\right)$.
• In ionic compounds, the ions i.e., cation and anion are held together by strong attractive forces.

Step 1: Part (g) Given Information

To determine whether the compound is ionic or molecular and its name. 

Step 2: Part (g) Explanation

The name of the compound ${\mathrm{MgCO}}_3$ is Magnesium carbonate.

• It is an ionic compound that is composed of magnesium ion $\left({\mathrm{Mg}}^{2+}\right)$ and carbonate ion $\left({{\mathrm{CO}}_3}^{2-}\right)$.
• In ionic compounds, the ions i.e., cation and anion are held together by strong attractive forces.