Physics 0625 · IGCSE · The nuclear model of the atom

The nuclear model of the atom — practice question

A sodium nuclide may be shown as $^{{23}}_{{11}}\text{Na}$. Which row shows the numbers of particles present in a neutral sodium atom?

  • Aelectrons: $11$, protons: $11$, neutrons: $12$
  • Belectrons: $12$, protons: $11$, neutrons: $23$
  • Celectrons: $12$, protons: $12$, neutrons: $11$
  • Delectrons: $23$, protons: $23$, neutrons: $11$

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