Major Points • Electronegativity (Determining which element or compound will be more electronegative) [covered in last chapter]
• Electron Configuration (Writing out the configuration of the electrons of an element using s, p, and/or d) [covered in last chapter] • Determining Valence Electrons (How many valence electrons are in a given element?) • Drawing Lewis Dot Structures (Using electrons to create a visual representation of an element or compound) • Identifying Molecular Structures (After making a Lewis Dot Structure of a compound, what shape does it make?) |
Example Problems1. Which element is more electronegative, C or As? (Use the electronegativity table below!)
Answer: C 2. Which compound is more electronegative, HP or HC? (Use the electronegativity table below!) Answer: HC 3. What is the electron configuration for Br? (Long form!) Answer: 1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^2, 3d^10, 4p^5 4. How many valence electrons does C have? Answer: 4 5. How many valence electrons does S have? Answer: 6 6. Create the Lewis Dot Structure for HCL Answer: |
Online Resources
Lewis Dot Structures of Covalent Compounds: http://www.wisc-online.com/objects/viewobject.aspx?ID=GCH6404
Determining Number of Valence Electrons: http://dl.clackamas.cc.or.us/ch104-06/valence_electrons.htm
Determining Number of Valence Electrons: http://dl.clackamas.cc.or.us/ch104-06/valence_electrons.htm
Video Resources
Making a Lewis Dot Structure for HCl: http://www.youtube.com/watch?v=EfAogVNO4HA
Finding the Most Electronegative Element/Compound (By Me!): https://vimeo.com/52505629
Drawing a Lewis Dot Structure (general):http://www.watchknowlearn.org/Video.aspx?VideoID=36997&CategoryID=5993
Finding the Most Electronegative Element/Compound (By Me!): https://vimeo.com/52505629
Drawing a Lewis Dot Structure (general):http://www.watchknowlearn.org/Video.aspx?VideoID=36997&CategoryID=5993
Activity Resources
Lewis Dot Structures (Multiple Choice): http://www.chem.ufl.edu/~itl/2045/lectures/lewis_ramyess/pjb_ramyess.html
Valence Electrons Activity: http://www.sciencegeek.net/Chemistry/taters/Unit3ValenceElectrons.htm
Valence Electrons Activity: http://www.sciencegeek.net/Chemistry/taters/Unit3ValenceElectrons.htm