8th Chemistry - Electronic Configuration II

St. George's College Subject: 8th CHEMISTRY

Teacher's notes

Objectives

Class: Electronic Configuration II

Vocabulary Link and Learn

Prepared by

Date: May 25th

2009 1

8th Milton A ‐ Electronic Configuration II Name

Oral Intervention

Coin

Chocolate

Sergio María Fernanda Alejandra Almendra Anna Paula Sandra E‐C Maia María Belén Alfredo Kinley Arianne Sandra M. Fiorella Rodrigo Giulia Jaime Stefano Bruno

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8th Milton Alpha ‐ Electronic Configuration II Name

Oral Intervention

Coin

Chocolate

Marcelo Antonella Paulo Alejandro Brenda Diego Gabriel Valeria Cristina Giuliana Joshua María Gracia Gonzalo N. Paolo Gonzalo R. Giorgio Nicolás María Claudia

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Let's remember previous learned concepts...

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Rules to fill up the Electron Shells 1. The first electron shell, the closest to the nucleus can hold up to 2 electrons.

2. The other electron shells can hold many more electrons.

3. The last electron shell can only hold up to 8 electrons, this is called the Octet Rule.

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New Knowledge beginning...

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Gilbert Newton Lewis • American physical‐chemist that published "The Atom and the Molecule".

• He is known for the description of the atomic dot diagrams, discovery of the Covalent Bond, description of the Lewsi Acid‐ Base definitions, and the discovery of the photon as the minimum unit of radiant energy.

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Dot Diagrams • The electrons located in the last energy level of atoms are called Valence Electrons.

• These electrons are easily recognized when checking the group the atom belongs to in the periodic table.

• The valence electrons are represented by dots or crosses.

• The elements must comply with the Octet Rule., and is used only for single elements or covalent compounds

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Examples

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Exercises • Determine the Total Electron Configuration of the following elements and its dot diagrams:

Molybdenum Hf Astatine Thallium Osmium Uranium Hydrogen Peroxide Carbon Dioxide Methane

x

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K-W-L Chart What I KNOW about this topic

What I WANT to know about this topic

What I LERANED about this topic

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SURVEY If you want to contribute in improving your Chemistry class, click in the survey link:

Google Forms Term II ‐ 8th Chemistry ‐ Class 2

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Resources Used Slide (Group)

Description

Resource

Origin

G1 ‐ 2

Image

Beethoven

http://bit.ly/Q7ggk

G1 ‐ 3

Image

Mozart

http://bit.ly/18LkW6

G1 ‐ 4 Animation

Idea

Notebook Gallery

G1 ‐ 5

Animation

See Saw Rule

Notebook Gallery

G1 ‐ 6

Image

Electron Shells

http://bit.ly/bJUj

G1 ‐ 8 Image

Gilbert Lewis

http://bit.ly/JUcpU

G1 ‐ 9

Image

Orbitals "d"

http://bit.ly/Jyo1n

G1 ‐ 10 Image

Orbitals "f"

http://bit.ly/Jyo1n

G1 ‐ 12 Animation

Periodic Table

Notebook Gallery

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Teacher's Notes This class has been designed to cover the topics of Lewis Dot Diagrams from Monday May 18th till Friday May 22nd.

For further knowledge about this topic: 1. Conduct a thorough search under the topic: Lewis Dot Diagrams on the Web, books and magazines.

2. If findings are not specific, ask your teacher for suggestions.

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Objectives • Understand and practice the techniques used to allocate the electrons in the atomic orbitals.

• Use the See‐Saw Rule.

• Represent any element using the standard electronic configuration.

• Represent any element using the Lewis Dot Diagram.

Note: All, or most, of the objectives will be covered during class time, however the student must be responsible for those objectives not covered or concluded.

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Vocabulary • • • • •

Quantum Numbers: Orbitals: Electrons: Octet Rule: Dot Diagram:

Note: Most of the vocabulary words will be covered during class time, however the student must be responsible for those words not covered or concluded.

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Link and Learn You can visit the following websites to improve your understanding on the present topic: • • • •

http://bit.ly/hLE1o http://science‐learning2009.wikispaces.com http://learningandscience.blogspot.com http://libraryatstgeorge.blogspot.com

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Prepared by

Gerardo LAZARO Science Lead Teacher Email: glazaro@sanjorge.edu.pe Wiki: http://science‐learning.wikispaces.com Blog: http://learningandscience.blogspot.com Twitter: http://twitter.com/glazaro

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