S9Q2L6-Filling of electron orbitalsdocx.docx - LESSON in Science 9 Topic Title Filling of Electron Orbitals(Chemistry Grade Level Grade 9 Time Allotment

S9Q2L6-Filling of electron orbitalsdocx.docx - LESSON in...

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LESSON in Science 9 Topic/ Title Filling of Electron Orbitals (Chemistry) Grade Level Grade 9 Time Allotment 60 minutes Learning Competencies/ Objectives At the end of the lesson the students should be able: ►Demonstrate how electron orbitals are filled in accordance with Aufbau Principle, Pauli’s Exclusion Principle and Hund’s Principle. ELICIT(5mins.) Materials Direction: Complete the table below. Principal Energy Level (n) Number of Sublevels Type of Sublevels and number of orbitals Maximum number of electrons Total Numbers of Valence Electrons Guide Questions: 1. How many types of orbitals are in principal energy levelthree?2. How many atomic orbitals are in the highest sublevel ofprincipal energy level three?3. What is an electron configuration?ENGAGE (5 min.)1. Show a picture of an apartment building where thestrange rules of the owner are listed. Rule 1. From the bottomupRule 2: Singles FirstRule 3 : Opposite GenderonlyGUIDE QUESTIONS1. If you are the owner canyou explain why the do youhave these rules? Visual aid

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