Chemistry 0620 · IGCSE · Isotopes

Isotopes — practice question

What does the term isotope mean for $^{31}_{15}\text{E}$?

  • A$^{31}_{14}\text{E}$
  • B$^{33}_{15}\text{E}$
  • C$^{31}_{16}\text{E}$
  • D$^{33}_{16}\text{E}$

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