3-D Periodic Trend Model Activity
Each group will create a three dimensional periodic table that satisfactorily illustrates the
assigned periodic property of the elements.
Instructions:
 Use the 96 well-plate as a base to support drinking straws.
 Determine a reasonable scale for the length of straws to correspond to the needed
values:
o atomic radii (1cm = 10pm)
o ionic radii (1cm = 10pm)
o ionization energy (1 cm = 100 kJ/mol; example 1312 kJ/mol = 13.1 cm)
o electronegativity (1 inch = 1 electronegativity value)
 Cut the straws to the appropriate length for each element in Table I (Part I).
 Place straws in sequence in the well plate to create a 3-D graph of the trend. Use the
illustrations below for placing the straws in the well plate:
OOOOOOOOOOOO
OOOOOOOOOOOO
OOOOOOOOOOOO
OOOOOOOOOOOO
OOOOOOOOOOOO
OOOOOOOOOOOO
OOOOOOOOOOOO
OOOOOOOOOOOO
Scale __________
H
He
Li Be
B
C
N
O
F
Ne
Na Mg
Al
Si
P
S
Cl
Ar
K Ca
Ga
Ge
As
Se
Br
Kr
Table 1.
Atomic
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
31
32
33
34
35
36
Element
symbol
H
He
Li
Be
B
C
N
O
F
Ne
Na
Mg
Al
Si
P
S
Cl
Ar
K
Ca
Ga
Ge
As
Se
Br
Kr
First
Ionization
energy
(kJ/mol)
1312
2372
520
899
801
1086
1402
1314
1681
2081
496
738
578
786
1012
1000
1251
1520
419
590
579
762
944
941
1140
1351
Electronegativity
2.2
NA
0.97
1.47
2.01
2.5
3.07
3.5
4.1
NA
1.01
1.23
1.61
1.74
2.06
2.44
2.83
NA
0.91
1.04
1.82
2.02
2.2
2.48
2.74
2.94
Atomic Radii
(pm)
37
32
134
125
90
77
75
73
71
69
154
145
118
111
106
102
99
97
196
174
120
122
119
117
114
110
Ionic Radii
(pm)
NA
NA
76
31
20
15
146
140
133
NA
102
72
54
41
212
184
181
NA
138
100
62
53
222
198
195
NA