Which of the following is an example of a ionic solid?
Correct answer: D. Magnesium Fluoride, MgF2(s)
- A. Sugar, C12H22OI l(s)
- B. Graphite C(s)
- C. Carbon dioxide CO2(s)
- D. Magnesium Fluoride, MgF2(s)
Explanation
Ionic solids are formed when positively charged ions (cations) and negatively charged ions (anions) are attracted to each other. The cations and anions are held together by electrostatic forces. Magnesium fluoride is an ionic solid because it is made up of magnesium cations (Mg2+) and fluoride anions (F-). The magnesium cations and fluoride anions are held together by strong electrostatic forces.The other substances in the list are not ionic solids because they are not made up of cations and anions. They are all molecular solids, which are held together by covalent bonds or weak intermolecular forces.
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