Question

Why a heavy elements are unstable ? ​

Answer 1

Answer:

Because,,,, they have excess nuclear energy. This is due to disproportion in number of neutrons and protons, and the nucleus tends to establish balance in the number of these particles, and to fall to lower energy state.

Answer 2

$\huge\mathfrak\blue{Answer}$

Because they have excess nuclear energy. This is due to disproportion in number of neutrons and protons, and the nucleus tends to establish balance in the number of these particles, and to fall to lower energy state.