What is a distinguishing characteristic of each and every person?

1. ELECTRON CONFIGURATION What is a distinguishing characteristic of each and every person? Fingerprints - every person has their own fingerprint DNA - every person has their own DNA signature Each element has it's own unique electron configuration They tell us wherein an atom the LAST electron is located, and where each element "lives" on the periodic table.

2. Suppose you want to send a letter to a friend somewhere in the 
United States Aside from the Zip Code -- what will the post office look at first? After the state, what is the next thing the post office will need? After the city? After the street name? This is similar to an electron in an atom. The electron configuration is the electron's address in the atom.

3. The Basics - where is the electron located? 1. The Energy Level ( it is similar to the state when you mail a letter) # 1 - 7: 7 rows on the periodic table 2.The Sublevel(it is similar to the city) s, p, d, f : these are the letters used to represent sublevels Some "states" are larger than others so they can have more "cities." Likewise, the larger the energy level the more sublevels they can contain. Energy level 1 can only have an s sublevel Energy level 2 can only have an s & p sublevel Energy level 3 can only have an s, p & d sublevel Energy level 4 - 7 can have s, p, d & f sublevels

4. 3.The Orbital(is similar to the street) Some "cities" have more "streets" than others s has one p has three d has five f has seven 4. The Spin (number) All orbitals can hold 2 electrons and they must be of opposite spin OR

5. 1s H 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 6s 6p 6d 7s 7p He N Co

6. Homework 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 6s 6p 6d 7s 7p

8. 1s 1s 2s 2s 2p 2p 2p 2p 2p 2p 3p 3p 3p 3p 3p 3p 3s 3s 4s 4s 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 4p 4p 4p 4p 4p 4p 4d 4d 4d 4d 4d 4d 4d 4d 4d 4d 5p 5p 5p 5p 5p 5p 5s 5s 6s 6s 4f 5d 5d 5d 5d 5d 5d 5d 5d 5d 6p 6p 6p 6p 6p 6p 7s 7s 6d 6d 6d 6d 6d 6d 6d 6d 6d 7p 7p 7p 7p 7p 7p 5f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 5d 6d 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f 5f

9. Electron Configuration 1s 2s 2p Shorthand form of Orbital Fill Diagrams 3s 3p 3d The only difference: 4s 4p 4d 4f Orbital Fill uses orbitals and half arrows 5s 5p 5d 5f 1s 6s 6p 6d 7s 7p Electron Configuration uses exponents 1s2 Example: Nitrogen Orbital Fill Diagram 1s 2s 2p Electron Configuration 1s2 2s2 2p3

10. Electron Configuration 1s 2s 2p 3s 3p 3d C 4s 4p 4d 4f 5s 5p 5d 5f 6s 6p 6d 7s 7p Co Kr

11. Homework 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 6s 6p 6d 7s 7p

12. 1s1 1s2 2s1 2s2 2p1 2p2 2p3 2p4 2p5 2p6 3s1 3s2 3p1 3p2 3p3 3p4 3p5 3p6 4s1 4s2 3d1 3d2 3d3 3d4 3d5 3d6 3d7 3d8 3d9 3d10 4p1 4p2 4p3 4p4 4p5 4p6 5s1 5s2 4d1 4d2 4d3 4d4 4d5 4d6 4d7 4d8 4d9 4d10 5p1 5p2 5p3 5p4 5p5 5p6 6s1 6s2 4f1 5d2 5d3 5d4 5d5 5d6 5d7 5d8 5d9 5d10 6p1 6p2 6p3 6p4 6p5 6p6 7s1 7s2 5f1 6d2 6d3 6d4 6d5 6d6 6d7 6d8 6d9 6d10 7p1 7p2 7p3 7p4 7p5 7p6 4f2 4f3 4f4 4f5 4f6 4f7 4f8 4f9 4f10 4f11 4f12 4f13 4f14 5d1 5f2 5f3 5f4 5f5 5f6 5f7 5f8 5f9 5f10 5f11 5f12 5f13 5f14 6d1

13. 1s Abbreviated Electron Configuration 2s 2p Uses the noble gases to skip parts 
of the electron configuration 3s 3p 3d 4s 4p 4d 4f symbol # e- ending e- conf. 5s 5p 5d 5f 6s 6p 6d [He] 2e- He 1s2 1s2 7s 7p Ne 2p6 [Ne] 2p6 10e- Ar 3p6 Find the Noble Gas 
that comes before 
the element on the 
periodic table. [Ar] 18e- 3p6 Kr 4p6 [Kr] 4p6 36e- Xe 5p6 [Xe] 5p6 54e- Rn 6p6 Example: Tin -- Sn (50 e-) [Rn] 6p6 86e- Electron Config. 1s22s22p63s23p64s23d104p65s24d105p2 Abb. e- Config. [Kr] Start e- config. after 4p6 5s24d105p2 Noble gas = Krypton (36e-) 36e-

14. 1s Abbreviated Electron Configuration 2s 2p 3s 3p 3d symbol # e- ending e- conf. 4s 4p 4d 4f [He] 2e- 1s2 5s 5p 5d 5f 6s 6p 6d [Ne] 2p6 10e- 7s 7p [Ar] 18e- 3p6 [Kr] 4p6 36e- Rb [Xe] 5p6 54e- [Rn] 6p6 86e- Dy U Sc As

15. Homework 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 6s 6p 6d 7s 7p