The answer is Strontium(Sr)
Answer:

Explanation:
As we know by radioactivity law

so here we will have


now we will have


now we also know that



Antoine-Laurent Lavoisier was the first person to report the four element classification system but also ended up including some compounds rather than elements.
write out what you have on both sides, then just use basic multiplication to try and even out both sides. I can help if you need me to balance some for you!!
Yes potential increases while kinetic decreases