Question

Ionic compounds are formed most easily with

• A. Low electron affinity elements and high ionization energy elements
• B. High electron affinity elements and low ionization energy elements
• C. Low electron affinity elements and low ionization energy elements
• D. High electron affinity elements and high ionization energy elements

Answer 1

The correct option is B

High electron affinity elements and low ionization energy elements

The formation of an ionic bond depends upon the easy formation of cations and anions. Therefore, the ionization energy of the metal atom should be low, so that it can easily form a cation. On the other hand, the electron affinity value of the non-metal atom should be high so that it can easily form an anion.