Physics 9702 · AS & A Level · Atoms, nuclei and radiation

Atoms, nuclei and radiation — practice question

The ion $\text{U}^{++}$ represents a uranium atom that has been doubly ionised. This uranium atom has a nucleon number of $235$ and a proton number of $92$. Using a simple model of the atom, how many particles are present in this ionised atom?

  • A$235$
  • B$325$
  • C$327$
  • D$329$

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