Bonding Unit:
Name: ___________________________________ Page 1 of 4
Periodicity Graphs
Directions: Construct three computerized graphs (use Excel or do a handmade graph use the graph paper on the
next page) using the data from the table below.
Graph 1: electronegativity (on y-axis) versus atomic number (on x-axis)
Graph 2: first ionization energy (on y-axis) versus atomic number (on x-axis)
Graph 3: atomic radius (on y-axis) versus atomic number (on x-axis)
On each graph, use a connected line between data points. Also, the title of each graph must also include your initials.
For each graph, include a short explanation which:
(A) defines the property on the y-axis,
(B) discusses the general trend of the property across the rows of the periodic table
(Periodic Trends), and
(C) discusses the general trend of the property down the columns of the periodic table
(Group Trends).
More information on this subject can be found in Chapter 13 of your text book.
Periodic Trends - Element Data Table
Element
Atomic Number
Symbol (use on x-axis) (no units)
H
1
He
2
Li
3
Be
4
B
5
C
6
N
7
O
8
F
9
Ne
10
Na
11
Mg
12
Al
13
Si
14
P
15
S
16
Cl
17
Ar
18
K
19
Ca
20
Electronegativity
Energy (kJ/mole)
2.1
- -(skip)
1.0
1.5
2.0
2.5
3.0
3.5
4.0
- -(skip)
0.9
1.2
1.5
1.8
2.1
2.5
3.0
- -(skip)
0.8
1.0
First Ionization
1312
2371
520
900
800
1086
1402
1314
1681
2080
495.8
737.6
577.4
786.2
1012
999.6
1255
1520
418.8
589.5
Atomic Radius
(picometers)
37
50
140
90
80
77
71
66
64
70
157
136
143
118
109
103
91
94
196
174
Bonding Unit:
Periodic Trends Graph
Name: ___________________________________ Page 2 of 4
Bonding Unit:
Name: ___________________________________ Page 3 of 4
WS B: Light and Light Equations
1. If an electron goes from level 4 to level 2 what happens? Be specific.
2. Fill in the following table
Violet
Energy (Joules)
Blue
Green
Wavelength-λ (meters)
Yel
Frequency –ν (s-1)
6.3 x 10-19 J
2.4 x 10-7 m
100 s-1
1.5 x 10-14 J
10
2.2 x 1013 s-1
525 nm
Orange
Red
Color of Light/type
of electromagnetic
radiation
Bonding Unit:
Name: ___________________________________ Page 4 of 4
The diagram above represents the spectra of three different elements. Explain the following:
a. Why are they different
b. Why are they not a continuous series of colors (ROYGBIV)?
c. How are these used in the field of Astronomy?