Electronegativity

Electronegativity: Pauling, Allred-Rochow, and Mulliken-Jaffé Scales
Data taken from Huheey, J.E. Inorganic Chemistry ; Harper & Row: New York, 1983.





Pauling Electronegativity Scale

H
2.20
Li
0.98
Be
1.57
B
2.04
C
2.55
N
3.04
O
3.44
F
3.98
Na
0.93
Mg
1.31
Al
1.61
Si
1.90
P
2.19
S
2.58
Cl
3.16
K
0.82
Ca
1.00
Sc
1.36
Ti
1.54
V
1.63
Cr
1.66
Mn
1.55
Fe
1.83
Co
1.88
Ni
1.91
Cu
2.00
Zn
1.65
Ga
1.81
Ge
2.01
As
2.18
Se
2.55
Br
2.96
Rb
0.82
Sr
0.95
Y
1.22
Zr
1.33
Nb
1.60
Mo
2.16
Te
1.90
Ru
2.20
Rh
2.28
Pd
2.20
Ag
1.93
Cd
1.69
In
1.78
Sn
1.96
Sb
2.05
Te
2.10
I
2.66
Cs
0.79
Ba
0.89
La
1.10
Hf
1.30
Ta
1.50
W
2.36
Re
1.90
Os
2.20
Ir
2.20
Pt
2.28
Au
2.54
Hg
2.00
Tl
2.04
Pb
2.33
Bi
2.02
Po
2.00
At
2.20




Allred-Rochow Electronegativity Scale

H
2.20
Li
0.97
Be
1.47
B
2.01
C
2.50
N
3.07
O
3.50
F
4.10
Na
1.01
Mg
1.23
Al
1.47
Si
1.74
P
2.06
S
2.44
Cl
2.83
K
0.91
Ca
1.04
Sc
1.20
Ti
1.32
V
1.45
Cr
1.56
Mn
1.60
Fe
1.64
Co
1.70
Ni
1.75
Cu
1.75
Zn
1.66
Ga
1.82
Ge
2.02
As
2.20
Se
2.48
Br
2.74
Rb
0.89
Sr
0.99
Y
1.11
Zr
1.22
Nb
1.23
Mo
1.30
Te
1.36
Ru
1.42
Rh
1.45
Pd
1.35
Ag
1.42
Cd
1.46
In
1.49
Sn
1.72
Sb
1.82
Te
2.01
I
2.21
Cs
0.86
Ba
0.97
La
1.08
Hf
1.23
Ta
1.33
W
1.40
Re
1.46
Os
1.52
Ir
1.55
Pt
1.44
Au
1.42
Hg
1.44
Tl
1.44
Pb
1.55
Bi
1.67
Po
1.76
At
1.90




Mulliken-Jaffé Electronegativity Scale

H
s: 2.21
Li
s: 0.84
Be
sp: 1.40
B
sp3: 1.81
sp2: 1.93
C
   p: 1.75
sp3: 2.48
sp2: 2.75
  sp: 3.29
N
    p: 2.28
sp3: 3.68
sp2: 4.13
  sp: 5.07
O
    p: 3.04
sp3: 4.93
sp2: 5.54
F
p: 3.90
Na
s: 0.74
Mg
sp: 1.17
Al
sp2: 1.64
Si
sp3: 2.25
P
    p: 1.84
sp3: 2.79
S
    p: 2.28
sp3: 3.21
Cl
p: 2.95
K
s: 0.77
Ca
sp: 0.99
Ga
sp2: 1.82
Ge
sp3: 2.50
As
    p: 1.59
sp3: 2.58
Se
    p: 2.18
sp3: 3.07
Br
p: 2.62
Rb
s: 0.50
Sr
sp: 0.85
In
sp2: 1.57
Sn
sp3: 2.44
Sb
    p: 1.46
sp3: 2.64
Te
    p: 2.08
sp3: 3.04
I
p: 2.52



Dr. Nutt's CHE 115 Course