Lesson: Electron Shells Chemistry • 7th Grade

In this lesson, we will learn how to use electron shell diagrams to identify elements and describe how electrons are arranged in atoms and ions.

Lesson Plan

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.

Q1:

How many electrons are in the outermost electron shell of boron?

Q2:

How many electrons are in the outermost electron shell of fluorine?

Q3:

Which electronic configuration describes how electrons are arranged in the shells of a potassium atom?