What is Chemistry? What topics are covered in chemistry? I'm out of my head, out of my mind,
oh, If you let me,
I'll be Out of my dress
and into your arms tonight
Yeah, I'm lost without it
Feels like I'm always waitin'
I need you to come get me
Out of my head, and into your arms tonight...

Taylor lyrics

chemistry is the scientific study of the properties and behavior of matter.

here's the link to your question!

explanation:

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.