1182Every Day ScienceMedium
Nuclear radiation is emitted by those elements whose:
Amolecules are unstable
Bmolecules are stable
Cnuclei are stable
Dnuclei are unstable
Correct answer
D. nuclei are unstable
Explanation
nuclei are unstable is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.