OBJ 4.1-4.3 Periodic Table & Bohr Electrons
Presentation
•
Chemistry
•
9th - 10th Grade
•
Practice Problem
•
Easy
Kristen Kush
Used 34+ times
FREE Resource
30 Slides • 10 Questions
1
OBJ 4.1-4.3
2
3
4
5
6
7
Multiple Choice
On the periodic table the horizontal rows (going left-right) are called
groups
periods
8
9
Multiple Choice
On the periodic table the vertical columns (going up & down) are called
groups
periods
10
11
12
13
In another tab open the PTable
You will need it for the next questions
Example question: Which element is in period 2 and group 5A?
Same Q: What element has 2 occupied energy levels, 5 valence electrons
14
Multiple Choice
Which element is in period 3 and group 4A?
Ga
V
Si
Ge
15
16
Multiple Choice
Which element is in period 5 and group 7A?
At
I
Os
17
18
19
20
21
22
23
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Poll
Build an atom: How many electrons could fit in the first orbital n=1?
0
2
4
6
8
25
Open Ended
How many do you think can fit in the second orbital n=2?
Third orbital?
Fourth orbital?
26
27
28
29
30
31
32
33
Hydrogen; Number of Protons = 1 = Number of electrons
Bohr electron notation H: 1
Carbon
Number of Protons = 6 = Number of electrons
First orbital = 2 e-
Second orbital = 4e-
Bohr electron notation C: 2-4
34
Magnesium
Number of Protons = 12 = Number of electrons
First orbital = 2 e-
Second orbital = 8 e-
Third orbital = 2 e-
Mg: 2-8-2
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36
Multiple Choice
What is the Bohr electron notation for fluorine (F = 9 electrons)?
9
1-8
2-7
7-2
3-3-3
37
Multiple Choice
What is the Bohr electron notation for sulfur (S = 16 electrons)?
8-8
2-14
2-8-6
8-2-6
4-4-4-4
38
Multiple Choice
What is the Bohr electron notation for lithium (Li = 3 electrons)?
2-1
3
1-2
0-3
39
Multiple Choice
What is the Bohr electron notation for argon (Ar = 18 electrons)?
8-10
2-16
2-4-12
2-8-8
40
20 electrons
2-8 then....
2-8-8-2
Period 4, four filled energy levels
OBJ 4.1-4.3
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