periodic trends

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Periodic Trends
Define the following terms using your book:
Atomic Radius:
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Electronegativity:
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Ionization Energy:
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Name: ___________________________________
Date:_____________
Partners’ Name:_______________________________________________________________
Periodic Trends
Directions for the activity: In your group, you will need to graph the following data. You are
required to have three separate graphs, one for each trend. These graphs should be on graphing
paper and you can put more than one graph on one sheet of graphing paper.
Element
Atomic Number
H
He
Li
Be
B
C
N
O
F
Ne
Na
Mg
Al
Si
P
S
Cl
Ar
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Atomic Radius
(pm)
37
32
134
125
90
77
75
73
71
69
154
145
130
118
110
102
99
97
Ionization energy
(kH/mol
1312
2372
520
899
801
1086
1402
1314
1681
2081
496
738
578
789
1012
1000
1251
1512
Electronegativity
2.1
NA
1.0
1.5
2.0
2.5
3.0
3.5
4.0
NA
0.9
1.3
1.6
1.9
2.2
2.6
3.2
NA
Name: ___________________________________
Date:_____________
Partners’ Name:_______________________________________________________________
Periodic Trends
Directions: Answer the following questions.
Questions:
1. What are trends did you notice?
A. Electronegativity:
B. Atomic Radius:
C. Ionization Energy:
2. Which of the following should have the largest atomic radius according to the trends you
noticed?
A. Copper or vanadium
B. Strontium or antimony
C. Arsenic or krypton
3. Which of the following should have the smallest ionization energy according to the
trends you noticed?
A. Calcium or germanium
B. Cesium or bismuth
C. Molybdenum or silver
4. Which of the following should have the largest electronegativity according to the trends
you noticed?
A. Sodium or aluminum
B. Rubidium or iodine
C. Silicon or chlorine
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