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27 August, 17:05

Iodine - 127 has a mass number of 127 and 74 neutrons. What percentage of the particles in an iodine - 127 nucleus are protons?

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  1. 27 August, 19:28
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    41.7%

    Explanation:

    The atomic number of Iodine is 53, 53/127 = 41.7
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