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29 December, 01:07

Oxygen-18 is a naturally-occuring, stable isotope and is commonly used is scientific studies as a tracer. Using the periodic table, predict the number of electrons, neutrons, and protons in oxygen-18.

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  1. 29 December, 01:16
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    1. Proton number = 8

    2. Electron number = 8

    3. Neutron = 10

    Explanation:

    Mass number = 18

    Proton = 8 (isotope still retain their atomic number)

    Electron = proton = 8 (since it is a neutral atom)

    Neutron number = ?

    Neutron = Mass number - proton

    Neutron number = 18 - 8 = 10
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