Americium is a radioactive element .
- It goes through alpha decay during nuclear reactions .
The nuclear reaction.is given by
Here alpha can be written as He too
Mass number of an element write in bottom of it!
So, there 80 would be the mass number of ₈₀Br.
Hope this helps!
Answer:
Period
Explanation:
Periodic trend along period:
As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction.
The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases and ionization energy increases because it is very difficult to remove the electron from atom and more energy is required.The electron affinity also increases along period because of greater positive charge.
Explanation:
Physics: The study of matter and energy and the interactions between them. Physicists study such subjects as gravity, light, and time.
The question is a bit confusing but here i go..
Explanation:
potential energy is the correct answer
