Electron Configuration 

005 - Electron Configuration
In this video Paul Andersen explains how to write out the electron configuration for atoms on the periodic table. More importantly he shows you why electrons arrange themselves in shells, subshells and orbitals by using Coulomb's law and studying the first ionization energies of different atoms.
ANSWERS:
Cl - [Ne] 3s^2 3p^5
Ag - [Kr] 4d^10 5s^1 - Did you get [Kr] 5s^2 4d^9? There are a few exceptions to this law. Most of them are found in the f-block metals and they are not of much chemical significance.
Music Attribution
Title: String Theory
Artist: Herman Jolly
sunsetvalley.bandcamp.com/trac...
All of the images are licensed under creative commons and public domain licensing:
File:Electron Configuration Diagrams from H to Ne.svg, n.d. commons.wikimedia.org/wiki/Fil....
"File:Electron Orbitals.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. en.wikipedia.org/wiki/File:El....
"File:Electron Shell 001 Hydrogen - No Label.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. en.wikipedia.org/wiki/File:Ele....
"File:Electron Shell 002 Helium - No Label.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. en.wikipedia.org/wiki/File:Ele....
"File:Electron Shell 003 Lithium - No Label.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. en.wikipedia.org/wiki/File:Ele....
"File:Electron Shell 004 Beryllium - No Label.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. en.wikipedia.org/wiki/File:Ele....
"File:Empirical Atomic Radius Trends.png." Wikipedia, the Free Encyclopedia. Accessed August 1, 2013. en.wikipedia.org/wiki/File:Emp....
"File:First Ionization Energy.svg." Wikipedia, the Free Encyclopedia. Accessed August 1, 2013. en.wikipedia.org/wiki/File:Fir....
"File:Klechkovski Rule.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. en.wikipedia.org/wiki/File:Kle....
"File:Periodic Table 2.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. en.wikipedia.org/wiki/File:Pe....
"File:Periodic Trends.svg." Wikipedia, the Free Encyclopedia. Accessed August 1, 2013. en.wikipedia.org/wiki/File:Per....
"File:Periodic Variation of Pauling Electronegativities.png." Wikipedia, the Free Encyclopedia. Accessed August 1, 2013. en.wikipedia.org/wiki/File:Per....
RJHall. Ionization Energies of Neutral Elements, in Units of eV., October 10, 2010. File:Ionization energies.png. commons.wikimedia.org/wiki/Fil....