Physics 0625 · IGCSE · The nuclear model of the atom

The nuclear model of the atom — practice question

A nuclide is represented by the symbol $^{{23}}_{{11}}\text{Na}$. Which of the following statements is true for every atom of this nuclide?

  • AThere are 11 protons in the nucleus.
  • BThere are 23 neutrons in the nucleus.
  • CThere are 11 electrons in the nucleus.
  • DThere are 34 nucleons in the nucleus.

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