Question

What is meant by radioactivity? Write answers to the question.

Answer 1

in other atoms, especially heavy ones such as those of uranium, this energy is insufficient, and the nuclei are unstable. An unstable nucleus spontaneously emits particles and energy in a process known as radioactive decay. The term radioactivity refers to the particles emitted.

Answer 2

$\huge\mathrm\red{Answer}$

Radioactivity is the process of spontaneous emission of alpha , beta and gamma radiation from the nucleus of atom during their decay