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2 radioactive isotopes of oxygen?
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2 radioactive isotopes of oxygen?

User Jehanzeb
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Oxygen-15 is an isotope of oxygen, frequently used in positron emission tomography, or PET imaging. It has 8 protons, 7 neutrons, and 8 electrons. The total atomic mass is 15.0030654 amu. It has a half-life of 122.24 seconds.
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