Lewis Dot Rule 4: Too few electrons with C, N, O and S
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1 Lewis Dot Rule 4: Too few electrons with C, N, O and S Index: A Rule 4 - double bond B Example 1-2 CC 2 C Example 2-2 CS D Example 3-2 CN copyright by James B. Condon (2013) all rights reserved. Some of the graphics are supplied by Corel Corporation with their permission. Use of these materials by others is encouraged provided these notices are not altered. Donations to the Roane State Foundations would be appreciated in order to support the development of these presentations. Ctrl ome - start Ctrl End - last slide º Next slide» Previous slide End Stop sound ome restart sound ESC - Stop Slideshow 1
2 8(2) then C, N, O and S can share 4 electrons. This is referred to as double bonding. This is because there are 2 pairs of electrons that are doing the bonding - 1 pair per bonding, thus, double bonding. 2
3 8(2) then C, N, O and S can share 4 electrons. Example 1: What is the Lewis Dot structure of the compound 2 CC 2? 2 C = = 4 1 " " C C " " 3
4 8(2) then C, N, O and S can share 4 electrons. Example 1: What is the Lewis Dot structure of the compound 2 CC 2? 2 C = = 4 1 " " C C " " 4
5 8(2) then C, N, O and S can share 4 electrons. Example 1: What is the Lewis Dot structure of the compound 2 CC 2? 2 C = = 4 1 C C 5
6 Example 1: What is the Lewis Dot structure of the compound 2 CC 2? owever, both Cs now have only 7 electrons - solution is double bonding C C 6
7 Example 1: What is the Lewis Dot structure of the compound 2 CC 2? owever, both Cs now have only 7 electrons - solution is double bonding C C 7
8 Example 1: What is the Lewis Dot structure of the compound 2 CC 2? after: 2 C = = 4 1 C C 4 = = = 1 4 U 8
9 Example 2: What is the Lewis Dot structure of the compound 2 CS? 9
10 Example 2: What is the Lewis Dot structure of the compound 2 CS? 1 C = 4 2 = S = 6 " C " S 10
11 Example 2: What is the Lewis Dot structure of the compound 2 CS? 1 C = 4 2 = S = 6 " C " S 11
12 Example 2: What is the Lewis Dot structure of the compound 2 CS? 1 C = 4 2 = S = 6 C S 12
13 Example 2: What is the Lewis Dot structure of the compound 2 CS?... but both C and S have only 7 electrons so - double bond. C S 13
14 Example 2: What is the Lewis Dot structure of the compound 2 CS? after: 1 C = 4 2 = S = 6 C S : 2 = = = : = 2 2 U 14
15 Example 3: What is the Lewis Dot structure of the compound 2 CN? 15
16 Example 3: What is the Lewis Dot structure of the compound 2 CN? 1 C = N = = 3 1 " C " N " 16
17 Example 3: What is the Lewis Dot structure of the compound 2 CN? 1 C = N = = 3 1 " C " N " 17
18 Example 3: What is the Lewis Dot structure of the compound 2 CN?... but both C and N have only 7 electrons so - double bond. C N 18
19 Example 3: What is the Lewis Dot structure of the compound 2 CN? after: 1 C = N = = 3 1 N C 3 = = = 4 1 : = 2 U 19
20 Lewis Dot Rule 4: Too few electrons with C, N, O and S Controls are: TE END Ctrl ome - start (index) Ctrl End - last slide º Next slide» Previous slide End Stop sound ome restart sound ESC - Stop Slideshow 20
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