Question 5
Which statement best describes a chemical bond?
The right answer is the one marked above.
The attraction between atoms or ions that arises when valence electrons are rearranged. The rearrangement — losing, gaining or sharing — is what makes the atoms stable, and the attraction that results is the bond.
The force binding protons and neutrons is nuclear, not chemical, and no chemical reaction disturbs it. A bond involves the valence electrons of both atoms specifically, not any passing electron, and it is an attraction rather than a repulsion.