Physics 5054 · O Level · The atom

The atom — practice question

For a particular isotope of element $Q$, the nuclide notation is $^R_ZQ$. In a neutral atom of this isotope, what is the combined total of protons, neutrons and electrons?

  • A$Z$
  • B$R$
  • C$Z + R$
  • D$2Z + R$

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