Radioactivity or radioactive decay is the process that occurs when unstable isotopes or atoms release energy by emitting radiations such as ,gamma radiations, alpha radiations and beta radiations to attain stability. Therefore, in this case decay is likely to occur when a given atom has two many neutrons in its nucleus in order to attain stability.
Your answer would be "Chemical Change"
In alpha and beta decay the parent element and the daughter element will be different isotope and not the same.
This is because as alpha particles comes out; the new element will have two less in atomic number; that is the atomic number will reduce by two and the mass number will reduce by four. While in a beta particle decay, the new element will have one higher in atomic number; that is the atomic number will increase by one.
Answer:
A compound
Explanation:
A compound is a pure substance that contains atoms of more than one element.
For example, water is a compound.
It is pure because it consists only of water molecules, and each molecule contains atoms of the elements hydrogen and oxygen.
Answer:
I think it's alkali metals
