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28 December, 07:54

What is the mass number of Ce

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Answers (2)
  1. 28 December, 08:33
    0
    140.116 u ± 0.001 u is the answer
  2. 28 December, 09:02
    0
    The answer is 140.116 u + / - (plus or minus doesnt matter) 0.001
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