Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.
-
Upload
stephany-barber -
Category
Documents
-
view
214 -
download
0
Transcript of Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.
![Page 1: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/1.jpg)
Valence Electrons and Lewis Dot Diagrams
Ms. Khericha and Ms. Rowland
![Page 2: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/2.jpg)
Electron Cloud
Electron Cloud
![Page 3: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/3.jpg)
Energy Levels
![Page 4: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/4.jpg)
Valence electrons
• Valence electrons are the electrons farthest away from the nucleus.
• Every group of elements will have a different number of valence electrons
![Page 5: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/5.jpg)
Why are valence electrons important?
• Valence electrons are key to whether or not an atom bonds with another atom
• The number of valence electrons is the “face” an atom shows to other atoms
• One way to show valence electrons is with electron dot diagrams or Lewis dot diagrams
![Page 6: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/6.jpg)
Lewis dot diagrams
• Lewis dot diagrams include the symbol for the element surrounded by dots. Each dot stands for one valence electron
Nucleus H
HydrogenHydrogen
![Page 7: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/7.jpg)
How to find the # of valence electrons
• Find out which group (column) your element is in.
• This will tell you the number of valence electrons your element has.
• You will only draw the valence electrons.
![Page 8: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/8.jpg)
Group 1 = 1 electron
GroupsElements in group 1 will have only 1 valence electron
![Page 9: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/9.jpg)
Group 2 = 2 electrons
GroupsElements in group 2 will have only 2 valence electron
![Page 10: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/10.jpg)
Groups Elements in group 3 will have only 3 valence electronGroup 3 = 3 electrons
![Page 11: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/11.jpg)
GroupsGroup 4 = 4 electrons
Elements in group 4 will have only 4 valence electron
![Page 12: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/12.jpg)
Groups Elements in group 5 will have only 5 valence electronGroup 5 = 5 electrons
![Page 13: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/13.jpg)
Group 6= 6 electrons
Groups Elements in group 6 will have only 6 valence electron
![Page 14: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/14.jpg)
Group 7 = 7 electrons
Groups Elements in group 7 will have only 7 valence electron
![Page 15: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/15.jpg)
Group 8 = 8 electronsExcept for He, it has 2 electrons
Groups Elements in group 8 will have only 8 valence electron
![Page 16: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/16.jpg)
Groups - ReviewGroup 1 = 1 electron
Group 2 = 2 electrons
Group 8 = 8 electrons
Except for He, it has 2 electrons
3, 4, 5, 6, 7
![Page 17: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/17.jpg)
How to: Lewis Structures
1) Find your element on the periodic table.2) Determine the number of valence electrons.3) This is how many electrons you will draw.4) Draw them starting at the right, and in a
counterclockwise manner.
![Page 18: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/18.jpg)
Lewis Structures
1) Write the element symbol.
C
![Page 19: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/19.jpg)
Lewis Structures
1) Write the element symbol.
2) Carbon is in the 4th group, so it has 4 valence electrons.C
![Page 20: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/20.jpg)
Lewis Structures
1) Write the element symbol.
2) Carbon is in the 4th group, so it has 4 valence electrons.
3) Starting at the right, draw 4 electrons, or dots, counter-clockwise around the element symbol.
C
![Page 21: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/21.jpg)
Practice!
![Page 22: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/22.jpg)
Lewis Structures
H
![Page 23: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/23.jpg)
Lewis Structures
H
![Page 24: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/24.jpg)
Lewis Structures
P
![Page 25: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/25.jpg)
Lewis Structures
P
![Page 26: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/26.jpg)
Lewis Structures
Ca
![Page 27: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/27.jpg)
Lewis Structures
Ca
![Page 28: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/28.jpg)
Lewis Structures
Ar
![Page 29: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/29.jpg)
Lewis Structures
Ar
![Page 30: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/30.jpg)
Lewis Structures
Cl
![Page 31: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/31.jpg)
Lewis Structures
Cl
![Page 32: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/32.jpg)
Lewis Structures
Al
![Page 33: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/33.jpg)
Lewis Structures
Al
![Page 34: Valence Electrons and Lewis Dot Diagrams Ms. Khericha and Ms. Rowland.](https://reader036.fdocuments.us/reader036/viewer/2022070401/56649f1b5503460f94c3158a/html5/thumbnails/34.jpg)
Assignment
• You will have the rest of the hour and the weekend to complete the Lewis structures assignment