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16 October, 23:51

If an isotope of oxygen (O) has 1 less neutron, how many electrons does it have?

and

If an isotope of sodium (Na) has 2 extra neutrons, what is it's atomic weight?

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Answers (1)
  1. 17 October, 00:07
    0
    The oxygen isotope has the same amount of elextrons (8 electrons)

    The atomic mass of the oxygen isotope would be 25
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