Question

When does radioactive decay occur?

A. when an atom gains electrons

B. when neutrons accumulate in the nucleus

C. when an atom loses electrons

D. when the nucleus decays

Answer 1

: When the nucleus decays

~Sarah Robinsen

Answer 2

The correct answer should be D. when the nucleus decays

That's why it's also called nuclear decay. The nucleus loses energy and starts to decay because it can't keep the nucleus together as a whole.