How does the interaction of valance electrons form chemical compounds Bohr Model What is a Bohr Model Shows all the protons neutrons and electrons contained within an atom Protons and neutrons are drawn in the Nucleus ID: 638111
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Slide1
Unit 6: Chemical Compounds
How does the interaction of valance electrons form chemical compounds?Slide2
Bohr ModelSlide3
What is a Bohr Model?
Shows all the protons, neutrons, and electrons contained within an atom.
Protons and neutrons are drawn in the Nucleus.
Electrons are drawn on
ENERGY LEVELS
or
SHELLS
or
ELECTRON CLOUDS
(the rings found around the nucleus). Slide4
Energy Levels
Energy levels can only hold a certain amount of electrons.
Energy Level
Maximum
Number of Electrons
1
2 electrons
2
8 electrons
3
18
electrons
4
32 electrons
5
50 electronsSlide5Slide6
Valence Electrons:
an electron of an atom, located in the outermost shell (valence shell) of the atom, that can be transferred to or shared with another atom.
The maximum number of valence electrons is
8Slide7
Practice draw the Bohr models for the following elements
Li - Lithium
Na - Sodium
Be – Beryllium
Mg - Magnesium
B - Boron
Al – Aluminum
F – Fluorine
Cl
– Chlorine
Ne - Neon
Ar
- Argon
1. Using your Bohr Models identify how many valance electrons are in each element.
(Valance = outer shell)
2. What group number that each element is in?
3.
Do you see any similarities between elements and or differences?Slide8
Group Number vs. V.E.
Element
Valence Electrons
Group Number
Li
Na
Be
Mg
B
Al
F
Cl
Ne
Ar
Note: The
GROUP
number tells you how many
valence electrons
you have.
Always
subtract 10 from groups 13 to 18
! So. Group 13 = 3, 14 = 4, 15 = 5, and so on.
Slide9
Color Code: Groups vs. Valence Electrons
OMIT
OMIT
KEY
Group 1 = 1 V.E.Slide10
Valence Electron Foldable
Using your
BLUE TEXTBOOK
Make the foldable on
Page 601
Use Pages 602 – 621 to complete
KEEP FOLDABLE and BRING IT BACK to CLASS FOR AN ASSIGNMENT
MONDAY – Will be able to use!
That will count as
QUIZ
!