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Davidson College
Davidson College: Valence Shell Electron Pair Repulsion (Vsepr) Model
Presents exercises where students can check their understanding of the Valence-Shell Electron-Pair Repulsion Model by predicting what a molecular shape will be. Requires Java.
Davidson College
Davidson College: Valence Shell Electron Pair Repulsion (Vsepr) Model
Explains the principles of the Valence-Shell Electron-Pair Repulsion Model, and gives examples of the geometry. Requires Java.
Texas Education Agency
Texas Gateway: Valence Shell Electron Pair Repulsion
Why does the shape of a molecule matter? Learn about how the shape of the molecule not only determines the molecule's properties but also whether it reacts or not. This tutorial reviews of VSEPR and molecular geometry.
CK-12 Foundation
Ck 12: Electron Arrangement in Atoms
[Free Registration/Login may be required to access all resource tools.] In the following online tutorail students will learn how to express the arrangement of electrons in atoms through electron configurations and Lewis valence electron...
University of Colorado
University of Colorado: Physics 2000: Periodic Table: Valences and the Periodic Table
The periodic table was laid out using valences or the electrons in the outermost shell.
University of Colorado
University of Colorado: Physics 2000: Origin of the Periodic Table: Valence Electrons
Valence electrons are defined in terms of electron configuration.
Wolfram Research
Wolfram Science World: Valence Shell Electron Pair Repulsion
Good site includes the basics of arrangement, hybridization, and gemetry.
University of Waterloo (Canada)
University of Waterloo: Valence Bond Theory and Hybrid Atomic Orbitals
Provides good objectives to go along with a text discussion of hybridization. Complete with illustrations, charts, and graphics.
Simon Fraser University
Chem1 Virtual Textbook: Molecular Geometry
An advanced explanation of the valence shell electron pair repulsion (VSEPR) theory describes specific molecular models involving digonal, trigonal, tetrahedral, and octahedral coordination, as well as central atoms with five bonds....
CK-12 Foundation
Ck 12: The Quantum Mechanical Model
[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will calculate the wavelength, frequency, and energy of light using Planck's constant and the speed of light. They will...
CK-12 Foundation
Ck 12: Electron Configuration and the Periodic Table
[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will sse the Periodic Table to identify and explain the properties of chemical families, including alkali metals, alkaline...
CK-12 Foundation
Ck 12: Plix: Valence Electrons
[Free Registration/Login Required] In this interactive you must place all of the students in their seats from back to front and see if you can figure out what element they would be if the rows of bus seats were the indicated electron...
Vision Learning
Visionlearning: Reactions and Changes: Chemical Reactions
Explanation of Noble gases and of how atoms attempt to fill their outermost valence shells for stability.
CK-12 Foundation
Ck 12: Ions
[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will be able to determine the number of valence electrons for any element and draw an electron dot diagram for any atom....
Vision Learning
Visionlearning: Chemistry: The Nature of the Chemical Bond
This site talks about ionic, polar covalent, and non-polar covalent bonding.
Concord Consortium
Concord Consortium: Molecular Workbench: Atomic Orbitals
View the approximate locations of electrons in valence shells 1s through 4f.
Oklahoma State University
Osu: Chemical Bonding Content in a Nutshell
An overview of chemical bonding and how valence electrons play a major role in these processes.
State University of New York
State University of New York: Metallic Bonding: Band Theory
This simulation shows a simple band diagram for metals for Group 1A and 2A and the transition series. Each metal's valence orbitals combine to create a band that is responsible for the element's properties.
Science Education Resource Center at Carleton College
Serc: Loopy Lewis Dot Diagrams
Students will use colored fruit loops to organize valence electrons to develop and master the basics of Lewis Dot diagrams. They will develop processing and critical thinking skills and also master a model of bonding.
Sophia Learning
Sophia: Interpreting Electron Configurations: Lesson 3
This lesson will demonstrate how to identify an element and state the number of valence electrons given its electron configuration. It is 3 of 3 in the series titled "Interpreting Electron Configurations."
American Chemical Society
Middle School Chemistry: The Periodic Table & Energy Level Models
Find out how energy level models are represented on the Periodic Table of Elements.
Chem Tutor
Chem Tutor: Chemistry: Compounds
This lesson focuses on chemical compounds including Ionic and Covalent Bonds, Valences, Lewis Structures, Binary Covalent Compounds, Radicals or Polyatomic Ions, and much more. It also includes a compound worksheet in which the young...
Oklahoma State University
Oklahoma State University: Key Questions
A quiz on chemical bonding and valence electrons.
Curated OER
Web Gallery of Art: Lola De Valence
An image of "Lola de Valence", created by Edouard Manet in 1862 (Oil on canvas, 123 x 92 cm).