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7 July, 23:40

How many neutrons exist in the isotope sodium-23?

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  1. 7 July, 23:47
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    It has 12 neutrons in it.
  2. 7 July, 23:55
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    To find the number of neutrons, take the atomic mass minus the atomic number

    the mass is given in the question as 23. the atomic number you can find in the periodic table for sodium, which is 11.

    neutrons = 23 - 11 = 12 neutrons
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