Question

the reason an ionic bond forms can best be described as
answer:
a the energy change for electron transfer results in a large gain in stability when the ionic bond forms.
b two atoms need to share electrons in order to fill their valence shells.
c two atoms exist as ions and the ions are attracted to each other.
d the atoms that form cations have low ionization energy and anions have high electron affinity, so the two atoms exchange electrons.

Explanation:

• Option A: Ionic bonds form because the energy change from electron transfer leads to a significant increase in stability. This is a fundamental concept in ionic bonding.
• Option B: Sharing electrons is characteristic of covalent bonds, not ionic bonds.
• Option C: While ions are attracted to each other in an ionic bond, this is a description of the bond's nature rather than the reason for its formation.
• Option D: The exchange of electrons is a part of the process, but the key is the resulting stability gain.

Answer:

A. the energy change for electron transfer results in a large gain in stability when the ionic bond forms.