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