unusedmetal unusedmetal
  • 21-10-2022
  • Chemistry
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Which of the following are isotopes of element X, with atomic number of 9: 19/9X, 20/9X, 9/18X, and 21/9X.

Which of the following are isotopes of element X with atomic number of 9 199X 209X 918X and 219X class=

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