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25-09-2017
Chemistry

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Uranium -235 is used in nuclear fission. determine the number of protons and neutrons in uranium -235

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05-10-2017

92 protons 143 neutrons. Given the problem, you already know that the number of protons plus the number of neutrons will add up to 235. So use the periodic table to determine the number of protons. The atomic number of Uranium is 92, so there's 92 protons. So 92 + n = 235 n = 235 - 92 = 143 Therefore the number of neutrons is 143.

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