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The formula for an isotope of oxygen with nine neutrons, including the mass number and the atomic number is 17/8 O.
Isotope is any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei.
This means that atoms of isotopes will have the same atomic number but a different mass number.
According to this question, an isotope of oxygen has 9 neutrons. If oxygen has an atomic number of 8, the formula of this particular isotope is as follows: 17/8 O.
Learn more about isotopes at: https://brainly.com/question/12955625
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