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A radioactive ________ is a radioactive form of an element that will undergo radioactive decay.

A. nucleus
B. half-life
C. isotope
D. molecule

User Xuchunyang
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2 Answers

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A radioactive isotope is a radioactive form of an element that will undergo radioactive decay.
Final answer: C
User Prince Patel
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A radioactive ISOTOPE is a radioactive form of an element that will undergo radioactive decay. So basically C is the correct answer.

User CodyF
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