30-06-2017
Chemistry

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What makes an atom radioactive? A.Its electrons are easily pulled away. B.Its protons and electrons repel each other. C.Its nucleus can easily break apart over time. D.Its neutrons are held more strongly than its protons.

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HBR2001 HBR2001

30-06-2017

C. It's nucleus can break apart.
If it's breaking apart, it's decaying in order to become more stable. Hope that helps!

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