Part 1: ATOMIC
RADIUS
Part 2: IONIZATION
ENERGY
Draw a circle to depict
the size of an atom of
each element using the
measurements below.
Draw an “energy bar” to
depict the energy
needed to remove one
electron.
1
Example: H = .37cm
Scale: 1cm =1/2 Å
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
H
Atomic
Radius
0.37
He
0.31
Li
1.52
Be
1.12
B
0.85
C
0.77
N
0.75
O
0.73
F
0.72
Ne
0.71
Na
1.86
Mg
1.60
Al
1.43
Si
1.18
P
1.10
S
1.03
Cl
1.00
Ar
0.98
K
2.27
Ca
1.97
31
32
33
34
35
36
Ga
1.35
Ge
1.22
As
1.20
Se
1.19
Br
1.14
Kr
1.12
Part 3: IONIC
RADIUS
Draw a circle to depict
the size of an ion of
each element.
1
3
Example: H = 1.31 cm
Example: Li = 0.76 cm
Scale: 1cm=1kJ/mol
H
1.31
He
2.40
Li
0.52
Be
0.90
B
0.80
C
1.09
N
1.40
O
1.31
31
32
33
34
35
36
F
1.68
Ne
2.08
Na
0.50
Mg
0.74
Al
0.59
Si
0.79
P
1.06
S
Cl
1.00
1.26
Ar
1.52
K
0.42
Ca
0.59
Ga
0.58
Ge
0.78
As
1.01
Se
0.94
Br
Kr
1.14
1.35
Draw a bar to depict the
ability of an element’s
atoms to attract
electrons in a chemical
bond.
1
Scale: 1cm=1/2 Å
Example: H = 1.10 cm
Scale: 1cm = 1 Pauling
Ionic
Radius
Ionization
Energy
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Part 4: ELECTRONEGATIVITY
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
H
-
He
-
Li
0.76
Be
0.31
B
0.20
C
-
N
1.46
O
1.40
F
1.33
Ne
-
Na
1.02
Mg
0.72
Al
0.54
Si
0.41
P
2.12
S
1.84
Cl
1.81
Ar
-
K
1.38
Ca
1.00
31
32
33
34
35
36
Ga
0.62
Ge
0.53
As
2.22
Se
1.98
Br
1.95
Kr
-
www.chemedx.org - January 2019 – A. Baxley
Electronegativity
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
H
2.1
He
-
Li
1.0
Be
1.5
B
2.0
C
2.5
N
3.0
O
3.5
F
4.0
Ne
-
Na
0.9
Mg
1.2
Al
1.5
Si
1.8
P
2.1
S
2.5
Cl
3.0
Ar
-
K
0.8
Ca
1.0
31
32
33
34
35
36
Ga
1.6
Ge
1.8
As
2.0
Se
2.4
Br
2.8
Kr
-
www.chemedx.org - January 2019 – A. Baxley