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11 June, 14:34

One isotope of a non metallic element has a mass number of 127 and 74 neutrons whats the symbol

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Answers (2)
  1. 11 June, 14:50
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    Iodine
  2. 11 June, 15:03
    0
    Answer: Iodine

    Explanation: When you subtract 127 by 74, you find out the atomic number (number of protons) and then simply check your periodic table which gives shows Iodine with an atomic number of 53 and an atomic mass of 126.90 which rounds to 127.
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