Question

Which aspect must be taken into consideration when creating a model of radioactive decay?

There must be a predictable and reversible change that occurs.
O There must be a way for unstable nuclei to become stable nuclei.
There must not be any changes to the element in question.
There must not be any particles
energy emitted from the nucleus.

Answer 1

In radioactive decay an unstable atomis nucleus emits particles or radiation and converts to a differenr atomis nucleus. This decay goes on until a stable nucleus is formed.

So, there must be a way for unstable nuclei to become stable nuclei.