Chemistry 0620 · IGCSE · Atomic structure and the Periodic Table

Atomic structure and the Periodic Table — practice question

This atom contains three electron shells. Its outer shell holds three electrons. How many protons and how many neutrons does this atom have?

  • Aprotons 13, neutrons 14
  • Bprotons 13, neutrons 27
  • Cprotons 14, neutrons 13
  • Dprotons 21, neutrons 24

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