Problem: Identify the nuclide produced when fluorine-18 decays by positron emission: 189F → 01e + ? Express your answer as an isotope using prescripts.

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We are asked what is the daughter nucleus produced when fluorine-18 decays by positron emission


Recall that in a nuclear reaction, the number of protons and neutrons are affected and the identity of the element changes. For Positron emission: forms a positron particle (01e, atomic mass = 0, atomic number = 1)


The incomplete nuclear equation is:

189 ___ + 01e,


Atomic mass of the daughter nuclide:

18 = x + 0

x = 18 – 018


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Identify the nuclide produced when fluorine-18 decays by positron emission: 189F → 01e + ? Express your answer as an isotope using prescripts.

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