Physics 0625 · IGCSE · The nuclear model of the atom

The nuclear model of the atom — practice question

Sodium-23 is written in nuclide notation as $^{23}_{11}\mathrm{Na}$. How many protons does a nucleus of sodium-23 contain?

  • A11
  • B12
  • C23
  • D34

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI