2. Magnetic_Properties_Atoms gen math.pptx

2. Magnetic_Properties_Atoms gen math

1. Magnetic Properties of Atoms Determining Magnetism Based on Electronic Configuration

2. Objectives At the end of the lesson, students should be able to: Define paramagnetic and diamagnetic atoms. Determine the magnetic property of atoms using electronic configuration. Apply rules for identifying unpaired electrons. Practice through guided activities.

3. Review: Electron Configuration Quick Recap: Electrons occupy orbitals following Aufbau principle, Pauli Exclusion Principle, and Hund’s Rule. Unpaired electrons are the key to magnetism. We will use orbital diagrams or subshell notation.

4. Magnetic Properties of Atoms Types: Paramagnetic → Atoms with unpaired electrons (attracted to magnetic field). Diamagnetic → Atoms with all electrons paired (weakly repelled).

5. How to Determine Magnetism Steps: 1. Write the electronic configuration. 2. Draw orbital diagram (if needed). 3. Identify if unpaired electrons exist. 4. If unpaired electrons → Paramagnetic. 5. If all paired → Diamagnetic.

6. Example 1: Oxygen (Z = 8) Configuration: 1s² 2s² 2p⁴ Analysis: In 2p, there are 4 electrons. Following Hund’s rule: ↑↓ ↑ ↑ (two unpaired electrons). Therefore, Oxygen is PARAMAGNETIC.

7. Example 2: Neon (Z = 10) Configuration: 1s² 2s² 2p⁶ Analysis: All orbitals are fully filled. No unpaired electrons. Therefore, Neon is DIAMAGNETIC.

8. Seatwork #202 : Identify the Property Determine if the following atoms are Paramagnetic or Diamagnetic: 1. Nitrogen (Z=7) 2. Magnesium (Z=12) 3. Oxygen (Z=8) 4. Sodium (Z=11) 5. Calcium (Z=20) )  

9. Activity 2: Group Work Task: Write the electronic configuration of Calcium (Z=20), Sulfur (Z=16), and Copper (Z=29). Determine if each atom is paramagnetic or diamagnetic. Justify your answer using orbital diagrams.

10. Summary Key Takeaways: Paramagnetic atoms have unpaired electrons. Diamagnetic atoms have all electrons paired. Electronic configuration helps determine magnetism. Activities reinforce application of rules.