Introduction to Bohr Models and Lewis Dot Structures

Learning Intentions

  • To learn how to draw Bohr diagrams and Lewis dot structures of atoms

Part 1 - Bohr Model Diagrams and Lewis Dot Structures

Bohr Model and Lewis Dot Structures (2:46)

Niels Bohr won the Nobel prize in Physics in 1922 for his work on the structure of the atom.

As a class, draw Bohr model diagrams and Lewis dot structures for the following elements:

  • Lithium
  • Oxygen
  • Sodium


Alkali Metals in Water (2:21)



 A pound of sodium metal in the river (0:27)



Part 2 - Questions

Using the Internet and your prior knowledge, find answers to the following questions:

  1. What are valence electrons?
  2. What is the maximum number of electrons that can be placed in each shell?
    1. First shell:
    2. Second shell:
    3. Third shell:
  3. What is the term for a column in the periodic table?
  4. What is the term for a row in the periodic table?
  5. Draw the Bohr model diagram and Lewis dot structure for each of the following elements:
    1. Berylium
    2. Nitrogen
    3. Argon
    4. Phosphorus
    5. Silicon
    6. Carbon
    7. Calcium
    8. Potassium
    9. Fluorine
    10. Helium
  6. In terms of electrons, what do elements in the same column of the periodic table have in common?
  7. In terms of electrons, what do elements in the same row of the periodic table have in common?
  8. A covalent bond occurs between what two types of elements?
  9. Why is a covalent bond stronger than an ionic bond?