What is the difference between ionic and covalent bonds?

What is the difference between ionic and covalent bonds?

• A. Ionic bonds involve sharing of electrons.
• B. Covalent bonds involve transfer of electrons.
• C. Both types create charged ions in solution.
• D. Ionic bonds involve transfer of electrons and attraction between ions.

Answer: (D)

The main idea is how electrons behave in bonding: ionic bonds form when electrons are transferred from one atom to another, creating oppositely charged ions that attract each other. Covalent bonds form when atoms share electrons to fill their outer shells, resulting in neutral molecules rather than ions. The choice describing the ionic bond as involving both transfer of electrons and attraction between ions captures both the electron movement and the resulting electrostatic hold between the ions, which is why it’s correct. The other statements don’t fit as neatly: sharing of electrons is what happens in covalent bonds, not ionic; transfer of electrons is what happens in ionic bonds, not covalent; and while ionic compounds do produce ions in solution, covalent compounds generally do not form charged ions in solution, so that claim isn’t universal.

The main idea is how electrons behave in bonding: ionic bonds form when electrons are transferred from one atom to another, creating oppositely charged ions that attract each other. Covalent bonds form when atoms share electrons to fill their outer shells, resulting in neutral molecules rather than ions. The choice describing the ionic bond as involving both transfer of electrons and attraction between ions captures both the electron movement and the resulting electrostatic hold between the ions, which is why it’s correct.

The other statements don’t fit as neatly: sharing of electrons is what happens in covalent bonds, not ionic; transfer of electrons is what happens in ionic bonds, not covalent; and while ionic compounds do produce ions in solution, covalent compounds generally do not form charged ions in solution, so that claim isn’t universal.