Pauli Exclusion Hunds Rule Orbital Diagrams Valence Electrons
![Pauli Exclusion, Hund’s Rule, Orbital Diagrams, Valence Electrons, Unpaired Electrons Pauli Exclusion, Hund’s Rule, Orbital Diagrams, Valence Electrons, Unpaired Electrons](https://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-1.jpg)
Pauli Exclusion, Hund’s Rule, Orbital Diagrams, Valence Electrons, Unpaired Electrons
![• Objective – Today I will be able to: • Explain the behavior • Objective – Today I will be able to: • Explain the behavior](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-2.jpg)
• Objective – Today I will be able to: • Explain the behavior of electrons based on Pauli’s exclusion Principle and Hund’s Rule • Illustrate the location of an electron by drawing an orbital diagram • Determine the number of unpaired electrons in an atom • Identify the location of valance electrons in an atom • Evaluation/ Assessment – Informal assessment – student responses when reviewing electron configuration problems, orbital diagrams and valence electrons. Listening to group interactions on practice sheets – Formal Assessment – collecting and analyzing responses to electron configuration worksheet 2 and the where is the electron lab. Reviewing responses to the exit ticket
![Lesson Sequence • Warm – Up • Explain: principles, rules and diagrams of electron Lesson Sequence • Warm – Up • Explain: principles, rules and diagrams of electron](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-3.jpg)
Lesson Sequence • Warm – Up • Explain: principles, rules and diagrams of electron configurations • Elaborate: Students complete orbital diagrams worksheet • Evaluate: Students will draw orbital diagrams on the board and explain their answers (informal assessment) • Explain: Valance Electrons Notes • Elaborate: Students complete a valance electrons worksheet • Evaluate: Students will share responses to the worksheet • Exit Ticket
![Warm - Up Write the electron configuration for the following elements: • Magnesium • Warm - Up Write the electron configuration for the following elements: • Magnesium •](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-4.jpg)
Warm - Up Write the electron configuration for the following elements: • Magnesium • Iron • Arsenic What is the abbreviated configuration for Sulfur?
![Objectives • Today I will be able to: – Explain the behavior of electrons Objectives • Today I will be able to: – Explain the behavior of electrons](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-5.jpg)
Objectives • Today I will be able to: – Explain the behavior of electrons based on Pauli’s exclusion Principle and Hund’s Rule – Illustrate the location of an electron by drawing an orbital diagram – Determine the number of unpaired electrons in an atom – Identify the location of valance electrons in an atom
![Homework • STEM Fair Conclusion Due Tuesday Homework • STEM Fair Conclusion Due Tuesday](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-6.jpg)
Homework • STEM Fair Conclusion Due Tuesday
![Agenda • Warm – Up • Collect Flame Test Lab • Notes Pauli Exclusion Agenda • Warm – Up • Collect Flame Test Lab • Notes Pauli Exclusion](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-7.jpg)
Agenda • Warm – Up • Collect Flame Test Lab • Notes Pauli Exclusion Principle, Hund’s Rule, Orbital Diagrams • Orbital Diagram Practice • Review Practice as a class • Valence Electron Notes • Valance Electron Practice • Exit Ticket
![Electron Configuration Rules and Principles Electron Configuration Rules and Principles](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-8.jpg)
Electron Configuration Rules and Principles
![Aufbau Principle • Electrons fill in lower energy levels before filling in higher energy Aufbau Principle • Electrons fill in lower energy levels before filling in higher energy](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-9.jpg)
Aufbau Principle • Electrons fill in lower energy levels before filling in higher energy levels
![Pauli Exclusion Principle • • An orbital can hold a max of 2 e. Pauli Exclusion Principle • • An orbital can hold a max of 2 e.](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-10.jpg)
Pauli Exclusion Principle • • An orbital can hold a max of 2 e. To occupy the same orbital, they must spin in opposite directions If 2 e- occupy an orbital, they are said to be “paired” If only 1 e- is present in an orbital, it is “unpaired”
![Pauli Exclusion Principle Pauli Exclusion Principle](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-11.jpg)
Pauli Exclusion Principle
![Hund’s Rule • e- occupy orbitals so that a max number of unpaired e- Hund’s Rule • e- occupy orbitals so that a max number of unpaired e-](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-12.jpg)
Hund’s Rule • e- occupy orbitals so that a max number of unpaired e- result • More stable arrangement
![Orbital Diagram • Shows the electrons in their sublevels • Represented with arrows Orbital Diagram • Shows the electrons in their sublevels • Represented with arrows](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-13.jpg)
Orbital Diagram • Shows the electrons in their sublevels • Represented with arrows
![Orbital Diagram 1 s 2 s 2 px 2 py 2 pz H ↑ Orbital Diagram 1 s 2 s 2 px 2 py 2 pz H ↑](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-14.jpg)
Orbital Diagram 1 s 2 s 2 px 2 py 2 pz H ↑ He ↑↓ C ↑↓ ↑↓ ↑ ↑ Ne ↑↓ ↑↓ ↑↓
![Complete the Electron Configuration and Orbital Diagram Practice Worksheet Complete the Electron Configuration and Orbital Diagram Practice Worksheet](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-15.jpg)
Complete the Electron Configuration and Orbital Diagram Practice Worksheet
![Review the Electron Configuration and Orbital Diagram Practice Worksheet Review the Electron Configuration and Orbital Diagram Practice Worksheet](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-16.jpg)
Review the Electron Configuration and Orbital Diagram Practice Worksheet
![Valence Electron Notes Valence Electron Notes](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-17.jpg)
Valence Electron Notes
![Valence Electrons • Electrons in the outermost energy level • Determines the number of Valence Electrons • Electrons in the outermost energy level • Determines the number of](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-18.jpg)
Valence Electrons • Electrons in the outermost energy level • Determines the number of electrons an atom gains, loses, or shares • These are the electrons that are involved in bonding
![Valence Electrons (skip) • Write the electron configuration for oxygen • 1 s 2 Valence Electrons (skip) • Write the electron configuration for oxygen • 1 s 2](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-19.jpg)
Valence Electrons (skip) • Write the electron configuration for oxygen • 1 s 2 2 p 4 • Oxygen has six valence electrons (2 s 2 and 2 p 4)
![Valence Electrons (skip) • Write the electron configuration for potassium • 1 s 2 Valence Electrons (skip) • Write the electron configuration for potassium • 1 s 2](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-20.jpg)
Valence Electrons (skip) • Write the electron configuration for potassium • 1 s 2 2 p 6 3 s 2 3 p 6 4 s 1 • Potassium has 1 valence electron (4 s 1)
![Valence Electrons • • Exceptions are the d and f sublevels! Use the number Valence Electrons • • Exceptions are the d and f sublevels! Use the number](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-21.jpg)
Valence Electrons • • Exceptions are the d and f sublevels! Use the number of electrons in the last s sublevel (and the p sublevel, if available) Write the electron configuration for Bromine 1 s 2 2 p 6 3 s 2 3 p 6 4 s 2 3 d 10 4 p 5 Bromine has seven valence electron (4 s 2 and 4 p 5)
![Foreshadowing: Octet Rule • Most atoms want 8 electrons in their outermost level OR Foreshadowing: Octet Rule • Most atoms want 8 electrons in their outermost level OR](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-22.jpg)
Foreshadowing: Octet Rule • Most atoms want 8 electrons in their outermost level OR full s and/or p sublevels • Atoms will form bonds to achieve the desired amount of electrons • Atoms are most stable when they have a full outer shell
![Complete Valence Electrons Worksheet Complete Valence Electrons Worksheet](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-23.jpg)
Complete Valence Electrons Worksheet
![Review Valence Electrons Worksheet as a class Review Valence Electrons Worksheet as a class](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-24.jpg)
Review Valence Electrons Worksheet as a class
![Exit Ticket • For the element Chlorine: – Write the electron configuration – Write Exit Ticket • For the element Chlorine: – Write the electron configuration – Write](http://slidetodoc.com/presentation_image_h2/dc0509a786d5290f9d35de9c814ef552/image-25.jpg)
Exit Ticket • For the element Chlorine: – Write the electron configuration – Write the abbreviated electron configuration – Draw an orbital diagram • Explain why you drew the electrons in the location of the orbital's that you did – Determine the number of valence electrons
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