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Kelter Strategy for Writing Lewis Structures

Kelter Strategy for Writing Lewis Structures. 1. Total # valence electrons in the system. CO 3 -2 C = 4 O = 6 x 3 (18) 4+18 =22 Don’t forget the charge it also accounts for electrons 22+2=24. 2. # of electrons to make everyone happy. # of atoms times 8 (What are the exceptions?)

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Kelter Strategy for Writing Lewis Structures

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  1. Kelter Strategy for Writing Lewis Structures

  2. 1. Total # valence electrons in the system • CO3-2 • C = 4 O = 6 x 3 (18) 4+18 =22 • Don’t forget the charge it also accounts for electrons • 22+2=24

  3. 2. # of electrons to make everyone happy. • # of atoms times 8 (What are the exceptions?) • 4 x 8 = 32

  4. 3. # of bonds • Step 2 – Step 1 divided by 2 (Shared electrons) • 32 – 24 = 8/2 = 4

  5. .. .. .. O O .. .. Denotes a pair of electrons .. .. O .. 4. Draw structure C

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