Radioisotopes are unstable and emit energy and particles in order to stabilize themselves. This process is called radioactive decay. They can be different isotopes of an element or even different elements altogether. Some radioisotopes exist naturally, while others are artificially created.

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Radioisotopes ____

Question 13

Multiple Choice

Radioisotopes ____.

A) are unstable and emit energy and particles to stabilize themselves.
B) are different elements from the "standard" elements.
C) are very stable and do not change over time.
D) are so unstable that they rarely exist in nature
E) exist only for carbon and oxygen

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