Lesson Plan

Bohr Models & Energy Levels

Learn to create electron configurations for elements based on their atomic numbers.
Megan C.
Classroom teacher
Novi High School (Novi, MI)
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My Grades 9, 10, 11, 12
My Subjects Science

Students will be able to...

Know the relationship between the atomic number and the number of electrons in a neutral atom.
Understand what is meant by shell, subshell, and orbital.
Determine the electron configuration of various elements.

Explain why atomic radii decrease across a period and increase down a group

Grades 9 - 12
All Notes
Teacher Notes
Student Notes

1 Direct Instuction

Activity: Drawing

Using knowledge of atomic numbers, draw simple Bohr Models of several elements. Identify the number of electrons that can be held in each shell.

2 Guided Practice

ExploreLearning Gizmos
Free to Try, Paid

Have the students complete the pre-gizmo activity. Discuss the answers as a group.


Students will work in small groups to complete the electron configuration Gizmo

3 Independent Practice

Google Drive
Free, Paid

Students will answer the following questions and upload their answers to the class Google Drive

Look at the first four shells. What is the relationship between the shell number and the number of subshells it contains? [The number of subshells is equal to the shell number. The fifth, sixth, and seventh shells have room for more subshells, but there are no elements with enough electrons to fill them.]
How many orbitals are there in the s, p, d, and f subshells? Is there a pattern?
How are the s, p, d, and f subshells shown in the periodic table?

Metals form bonds when they lose their outermost electrons. How could losing outer electrons lead to a stable electron configuration

4 Wrap-up

Free, Paid

Students will be assigned an element and asked to create an informative prezi presentation about their elements characteristics. They will be required to include an electron configuration of their element.