An ionic compound is most likely to be formed when:
Correct answer: B. The ionization energy of A is low but the electron affinity of B is high
- A. Ionization energy of A is high but electron affinity of B is low
- B. The ionization energy of A is low but the electron affinity of B is high
- C. Both ionization energy of A and electron affinity of B are high
- D. Both ionization energy of A and electron affinity of B are low
Explanation
Ionic bond formation involves the transfer of electrons. This is most favorable when one atom (the metal) can lose an electron easily (low ionization energy) and the other atom (the nonmetal) can gain an electron easily (high electron affinity).
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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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