An ionic compound A+ B- is most likely to be formed when:
Correct answer: B. The ionization energy of A is low and the electron affinity of B is high.
- A. The ionization energy of A is high and the electron affinity of B is low.
- B. The ionization energy of A is low and the electron affinity of B is high.
- C. The ionization energy of A and the electron affinity of B is high.
- D. The ionization energy of A and the electron affinity of B is low.
Explanation
The ionization energy is known as the amount of energy required to remove an electron from an isolated atom or molecule, it forms a cation and increases across the period therefore it must be low in A to form a cation. While electron affinity is known as the amount of energy released when an electron is added to a neutral atom to form an anion, it also increases across the period thus it must be high in B.
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