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

Atoms, nuclei and radiation — practice question

Uranium-235 can be shown using the symbol $^{235}_{92}\text{U}$. Which row gives the numbers of nucleons, protons and neutrons in a $^{235}_{92}\text{U}$ nucleus?

  • Anucleons $=92$, protons $=235$, neutrons $=143$
  • Bnucleons $=143$, protons $=92$, neutrons $=235$
  • Cnucleons $=235$, protons $=92$, neutrons $=143$
  • Dnucleons $=235$, protons $=143$, neutrons $=92$

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