Изотоп какого элемента нужно взять вместо ¹²C, чтобы относительная атомная масса алюминия стала равна 3?

  1. ⁸⁴Kr
  2. ⁹⁶Mo
  3. ¹⁰⁸Ag
  4. ¹³²Cs
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Question 63 of 76
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