The most favorable conditions for the formation of ionic bonds are
Correct answer: D. Small cation and large anion with low charge
- A. Large cation and small anion
- B. Large cation and large anion
- C. Small cation and small anion
- D. Small cation and large anion with low charge
Explanation
Ionic bond formation is most favorable when the electrostatic attraction between ions is strong and covalent character is minimal. A small cation has a high charge density, allowing it to attract anions strongly. A large anion with low charge has lower charge density and is less polarizing, reducing covalent character. Therefore, a combination of a small cation and a large, low-charge anion favors the formation of a strong and predominantly ionic bond.
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Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.
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