## Presentation on theme: "Rules for Drawing Energy Level Diagrams"— Presentation transcript:

1 Rules for Drawing Energy Level Diagrams

2 1. The number of energy levels in the diagram must match the row number for the element in the periodic table. N is in the 2nd row, so it has 2 energy levels

3 2. How many electrons Start at H. Place one electron for every element until you get to your desired element.

4 3. Where and how to place electrons?Aufbau Principle: Lowest energy levels fill first See textbook p

5 In what order to place electrons in orbitals?Hund’s Rule: For each orbital, place electrons with the same spin (by themselves), and then pair if needed. Pairing requires more energy!

6 Examples:

7 Materials for BINGO Aufbau Chart Periodic Table Small squaresof torn paper

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