Question

explain radioactivity.name few elements which are radioactive ​

Answer 1

Answer:

Radioactivity is the phenomenon of spontaneous emissions of radiations ( light and heat) from a radio active metal

Radioactive metals : Carbon 14 isotope , Uranium , thorium.

Answer 2

Radioactivity:- An unstable nucleus spontaneously emits particles and energy in a process known as radioactive decay. The term radioactivity refers to the particles emitted.