Chemistry 130 CHM 100 Lab  | Chemical Bonding | Step #1

Part 1: Classify chemical substances as ionic or covalent based upon electronegativity differences.

Determine whether the compounds on the data table are covalently or ionicly bonded based on the Pauling Electronegativity Numbers given on the table.

  Group
Period 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 H
2.1 		                                He
0
2 Li
0.98 		Be
1.57 		                    B
2.04 		C
2.55 		N
3.04 		O
3.44 		F
3.98 		Ne
0
3 Na
0.93 		Mg
1.31 		                    Al
1.61 		Si
1.9 		P
2.19 		S
2.58 		Cl
3.16 		Ar
0
4 K
0.82 		Ca
1 		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
1.9 		Zn
1.65 		Ga
1.81 		Ge
2.01 		As
2.18 		Se
2.55 		Br
2.96 		Kr
0
5 Rb
0.82 		Sr
0.95 		Y
1.22 		Zr
1.33 		Nb
1.6 		Mo
2.16 		Tc
1.9 		Ru
2.2 		Rh
2.28 		Pd
2.2 		Ag
1.93 		Cd
1.69 		In
1.78 		Sn
1.96 		Sb
2.05 		Te
2.1 		I
2.66 		Xe
2.6
6 Cs
0.79 		Ba
0.89 		La
1.1 		Hf
1.3 		Ta
1.5 		W
2.36 		Re
1.9 		Os
2.2 		Ir
2.2 		Pt
2.28 		Au
2.54 		Hg
2 		Tl
2.04 		Pb
2.33 		Bi
2.02 		Po
2 		At
2.2 		Rn
0
7 Fr
0.7 		Ra
0.89 		Ac
1.1 		Rf
 		 Db
 		 Sg
 		 Bh
 		 Hs
 		 Mt
 		 Uun
 		 Uuu
 		 Uub
 		            
  Lanthanides Ce
1.12 		Pr
1.13 		Nd
1.14 		Pm
1.13 		Sm
1.17 		Eu
1.2 		Gd
1.2 		Tb
1.1 		Dy
1.22 		Ho
1.23 		Er
1.24 		Tm
1.25 		Yb
1.1 		Lu
1.27
  Actinides Th
1.3 		Pa
1.5 		U
1.38 		Np
1.36 		Pu
1.28 		Am
1.3 		Cm
1.3 		Bk
1.3 		Cf
1.3 		Es
1.3 		Fm
1.3 		Md
1.3 		No
1.3 		Lr
 

IONIC: When the electronegativity difference is greater than 1.6, the bond is considered ionic.

COVALENT: When the electronegativity difference is less than 1.6, the bond is considered covalent.

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