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Nobel Gas Config and Lewis Dot Diagrams

Nobel Gas Config and Lewis Dot Diagrams. Electron Configuration . The address of each and every electron in an atom. Ex: Tungsten-74 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 5p 6 6s 2 4f 14 5d 4 Long…oh so very, very long. Does your hand hurt? Want a cheat?.

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Nobel Gas Config and Lewis Dot Diagrams

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  1. Nobel Gas Config and Lewis Dot Diagrams

  2. Electron Configuration • The address of each and every electron in an atom. • Ex: Tungsten-74 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f145d4 • Long…oh so very, very long. • Does your hand hurt? • Want a cheat?

  3. Your Shortcut Nobel Gas Configuration! • Find your element • Look at the Nobel gas that comes BEFORE your element • Write your Nobel gas out and bracket it • Any part of the electron configuration that comes after the Nobel gas you write. Ex. Tungsten [Xe-54] 6s2 4f145d4 5. Check your work…count electrons… 54+2+14+4= 74 e-… W atomic # 

  4. Valence Electrons • Valence electrons are the electrons in the outermost… or highest energy level. • Come ONLYfrom s and p orbitals for a MAX of 8 valence electrons. • Ex. Tungsten [Xe-54] 6s2 4f14 5d4 • The highest energy level here is 6s…there are 2 electrons here, so W has 2 valence electrons. • When dealing with an element from the s or p block, valence electrons can be counted from their A group number.

  5. Picture Please! • To show valence electrons we use Lewis Dot Formulas. 1. Write symbol of element 2. Put dots around element to represent valence electrons. There are four sides around your symbol…one side represents the s suborbital, the other three sides represent the three suborbitals of p. • Ex. W had 2 valence e- both from s suborbital W

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