Question

Name of a radioactive inactive element.​

Answer 1

Explanation:

Typically these primordial radioisotopes have half-lives so long they are stable for all practical purposes, but when they decay they form what are called secondary radionuclides. For example, primordial isotopes thorium-232, uranium-238, and uranium-235 can decay to form secondary radionuclides of radium and polonium.

Answer 2

There are lots of radioactive inactive elements. For example: Iron , copper , lead , tin etc.