Answer:
The answer to your question is below
Explanation:
Mass Location Electrical charge
Protons 1.67 x 10⁻²⁴ nucleus +1
Neutrons 1.67 x 10⁻²⁴ nucleus 0
Electrons 9.11 x 10⁻²⁸ electron cloud -1
Because if you change the subscripts you are changing the chemical compounds of that element. Therefore the element would change.
Radioactive decay occurs when an unstable nucleus loses energy
So the answer is the second choice
Scientific theory's will always change based upon new evidence. The 'Big Bang Theory' is always changing when new evidence arises.
However, on the other hand, scientific laws will never change.