Question

what are radioactive elements

Answer 1

the elements which radiate harmful radioactive radiations are called radioactive elements.

Answer 2

Answer:

Definition of radioactive element. Applied to certain unstable atoms, the nuclei of which spontaneously disintegrate, emitting particles and rays, eventually reverting through a series of such emissions into an atom having a stable nucleus and a different atomic number. Radium, e.g., becomes lead-207.n:

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