Question

if you add too many neutrons to an atom, what happens to its nucleus? it becomes unstable. it changes to a net charge of +1. it changes to a net charge of -1. nothing happens; it remains stable and maintains a net charge of 0.

Explanation:

Neutrons are uncharged particles. Adding too many neutrons disrupts the balance in the nucleus, making it unstable.

Answer:

It becomes unstable.