The correct option is **A. Ionic compounds are polar and nonpolar solvents cannot stabilize the ions.** ### Detailed Explanation: 1. **Understanding Ionic Compounds:** - Ionic compounds are formed from the electrostatic attraction between positively charged ions (cations) and negatively charged ions (anions). This results in a strong ionic bond, which is a type of chemical bond that occurs between metals and nonmetals. 2. **Polarity of Ionic Compounds:** - Ionic compounds are inherently polar due to the significant difference in electronegativity between the ions that form them. This polarity means that ionic compounds have a positive and a negative end, which can interact with other polar substances. 3. **Nature of Nonpolar Solvents:** - Nonpolar solvents, such as hexane or benzene, consist of molecules that do not have a significant charge separation. They do not have regions of positive or negative charge, which means they cannot interact effectively with the charged ions of ionic compounds. 4. **Dissolution Process:** - For an ionic compound to dissolve in a solvent, the solvent molecules must be able to surround and stabilize the individual ions. In polar solvents (like water), the polar molecules can interact with the ions, effectively pulling them apart and allowing them to disperse in the solution. - In contrast, nonpolar solvents lack the ability to stabilize these ions. When an ionic compound is placed in a nonpolar solvent, the solvent molecules cannot interact with the ions to the extent needed to overcome the strong ionic bonds holding the compound together. As a result, the ionic compound remains largely undissolved. 5. **Why Other Options Are Incorrect:** - **B. Ionic compounds have strong covalent bonds that prevent dissolution.** - This statement is incorrect because ionic compounds are held together by ionic bonds, not covalent bonds. Covalent bonds involve the sharing of electrons between atoms, while ionic bonds involve the transfer of electrons and the attraction between charged ions. The strength of ionic bonds does contribute to the low solubility in nonpolar solvents, but the primary reason is the inability of nonpolar solvents to stabilize the ions. - **C. Nonpolar solvents do not have sufficient energy to break ionic bonds.** - While it is true that nonpolar solvents do not provide the necessary energy to break ionic bonds, the more critical issue is that they cannot stabilize the ions once they are separated. The lack of interaction between nonpolar solvents and ions is the key reason for low solubility, rather than just energy considerations. - **D. Ionic compounds are soluble in all types of solvents regardless of polarity.** - This statement is false. Ionic compounds are generally soluble in polar solvents (like water) but are not soluble in nonpolar solvents. This option contradicts the fundamental principles of solubility, which state that "like dissolves like." Polar substances dissolve well in polar solvents, while nonpolar substances dissolve well in nonpolar solvents. ### Summary: - Ionic compounds are polar due to the presence of charged ions. - Nonpolar solvents cannot stabilize ions, preventing dissolution. - Ionic bonds are strong, but the key issue is the lack of interaction with nonpolar solvents. - Solubility depends on the polarity of the solvent and solute; "like dissolves like." This understanding is crucial for predicting the behavior of ionic compounds in different solvent environments, which is a common topic in chemistry exams.