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
[ Ссылка ]
All of the images are licensed under creative commons and public domain licensing:
File:Electron Configuration Diagrams from H to Ne.svg, n.d. [ Ссылка ].
"File:Electron Orbitals.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. [ Ссылка ].
"File:Electron Shell 001 Hydrogen - No Label.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. [ Ссылка ].
"File:Electron Shell 002 Helium - No Label.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. [ Ссылка ].
"File:Electron Shell 003 Lithium - No Label.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. [ Ссылка ].
"File:Electron Shell 004 Beryllium - No Label.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. [ Ссылка ].
"File:Empirical Atomic Radius Trends.png." Wikipedia, the Free Encyclopedia. Accessed August 1, 2013. [ Ссылка ].
"File:First Ionization Energy.svg." Wikipedia, the Free Encyclopedia. Accessed August 1, 2013. [ Ссылка ].
"File:Klechkovski Rule.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. [ Ссылка ].
"File:Periodic Table 2.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. [ Ссылка ].
"File:Periodic Trends.svg." Wikipedia, the Free Encyclopedia. Accessed August 1, 2013. [ Ссылка ].
"File:Periodic Variation of Pauling Electronegativities.png." Wikipedia, the Free Encyclopedia. Accessed August 1, 2013. [ Ссылка ].
RJHall. Ionization Energies of Neutral Elements, in Units of eV., October 10, 2010. File:Ionization energies.png. [ Ссылка ].
![](https://i.ytimg.com/vi/2AFPfg0Como/mqdefault.jpg)