Happy Atoms Worksheet Page 12
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33Periodic Trends Worksheet
Part II: Identifying Valence Electrons
Use the Periodic Table Mat to lay out one of each atom on the mat. Make sure you have enough space.
1. What patterns do you notice as you move down periods in the Periodic Table? What is your evidence? How can you summarize the pattern of
valence electrons as you move down periods in the Periodic Table?
2. What patterns do you notice as you move across groups in the Periodic Table? What is your evidence? How can you summarize the pattern of
valence electrons as you move across groups in the Periodic Table?
Use the space below to visually summarize these patterns. You can write in your patterns on the arrows.
Group
Group
1A
2A
Group
Group
Group
Group
Group
H
He
2A
4A
5A
6A
7A
Li
Be
C
N
O
F
Ne
Na
Mg
Si
P
S
Cl
Ar
Part III: Electronegativity
2
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