Chemistry 0620 · IGCSE · Atomic structure and the Periodic Table

Atomic structure and the Periodic Table — practice question

The elements sodium through argon make up Period 3 of the Periodic Table. Which row shows the pattern across Period 3 from left to right?

  • Anumber of outer-shell electrons decreases; metallic character decreases; group number decreases
  • Bnumber of outer-shell electrons decreases; metallic character increases; group number decreases
  • Cnumber of outer-shell electrons increases; metallic character decreases; group number increases
  • Dnumber of outer-shell electrons increases; metallic character increases; group number increases

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