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ELECTRON CONFIGURATION 2 Methods to use: 1. electron configurations (using Periodic Table Blocks) 2. orbital notations (arrows) 1. ELECTRON CONFIGURATION: Electrons find homes in orbitals and fill orbitals from lowest energy level FIRST REMEMBER! - s holds 2 – color the s block orange - d holds 10 – color the d block green - p holds 6 – color the p block purple f holds 14 – color the f block blue EX. Let’s write the electron configuration for Magnesium. EX. What is the electron configuration of Silicon? EX. What is the electron configuration of Lithium? EX. What is the electron configuration of Sulfur? TRICKS! 1. Valence electrons and the periodic table (by group #) 2. Divided by blocks vs. Diagonal Rule 3. [Noble Gas] notation 2. ORBITAL NOTATION We can also use diagrams with arrows to show electrons and their spin in a diagram called orbital notation. Each block represents an orbital. Remember! - s has 1 orbital - p has 3 orbitals - d has 5 orbitals - f had 7 orbitals or or or or 1 parking spot 3 parking spots 5 parking spots 7 parking spots EXAMPLES OF ORBITAL NOTATION 1 atom of Li # of P = # of e- = 1s 2s 1s 2s 2p 1s 2s 2p 1 atom of F # of P = # of e- = 1 atom of S # of P = # of e- = http://www.chemfiles.com/flash/e_configs1.swf 3s 3p Electron Configurations and Orbital Notation NAME______________#_____ Write the electron configurations for the following elements. 1. N 2. Cl 3. Ne 4. V 5. Mg Find the elements with the following configurations. 6. 1s22s2 7. 1s22s22p2 8. 1s22s22p63s2 Show the orbital notation (including orbital and spin of electron) for the following: HINT: You may replace drawing a box by drawing an underline as I’ve demonstrated with the first example. 9. H ___ 1s ___ 2s ___ ___ ___ ___ ___ ___ ___ 2p 3s 3p 10. Mg 11. C 12. O Write out the electron configurations AND show the orbital notation for the following. 13. He 14. Be 15. F