Electronegativities of the Elements

IA IIA IIIB - VIIIB IB IIB IIIA IVA VA VIA VIIA
H
2.2		                  
Li
1.0		 Be
1.5		       B
2.0		 C
2.5		 N
3.1		 O
3.5		 F
4.1
Na
1.0		 Mg
1.2		       Al
1.5		 Si
1.7		 P
2.1		 S
2.4		 Cl
2.8
K
0.9		 Ca
1.0		   Cu
1.8		 Zn
1.7		 Ga
1.8		 Ge
2.0		 As
2.2		 Se
2.5		 Br
2.7
Rb
0.9		       Cd
1.5		 In
1.5		 Sn
1.7		 Sb
1.8		 Te
2.0		 I
2.2
Cs
0.9		       Hg
1.4		   Pb
1.5		      

Allred-Rochow scale from J. E. Huheey, E.A. Keiter, and R. L. Keiter, Inorganic Chemistry: Principles of Structure and Reactivity, 4th ed., HarperCollins, New York, 1993, pp 187-190.