An isotope of oxygen with 8 protons and 9 neutrons. Its nuclear spin concerns the coupled nuclear quantum state, not the electronic configuration.
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Oxygen-17 (³¹₆O) is a stable isotope of oxygen. It contains 8 neutrons and 9 protons in its nucleus, giving it a mass number of 17. In naturally occurring oxygen, about 0.037% is this isotope, making it relatively rare compared to the more common isotopes, Oxygen-16 (the most abundant) and Oxygen-18.