Question

why do atoms exchange or share electrons during bonding? (1 point)
to become neutral
to attract an ion with the opposite charge
to obtain a full outer electron shell
to have eight inner level electrons

Explanation:

Atoms exchange or share electrons to achieve a stable electron - configuration, which is usually a full outer electron shell (the octet rule for most atoms). This makes them more stable.

Answer:

to obtain a full outer electron shell