Lesson Plan: Electron Shells Chemistry • 7th Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to use electron-shell diagrams to identify elements and describe how electrons are arranged in atoms and ions.


Students will be able to

  • recall how the arrangement of the periodic table relates to the maximum number of electrons found in each shell,
  • use the electron-shell model to assign a simple electron-shell configuration to an atom or ion,
  • interpret shell diagrams in order to identify potential atoms and ions,
  • explain the relative stability of the shells in order to correctly fill electron shells with electrons in the correct order.


Students should already be familiar with

  • the structure of atoms.


Students will not cover

  • quantum numbers,
  • energy sublevels and orbitals,
  • the buildup of electrons in shells,
  • the significance of the noble gas electronic structures,
  • the distribution of electrons in s, p, and d orbitals.

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