Electronegativity Activity Sheet - Dipole, Vsepr Shape, Symmetry, Polarity
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1
2electronegativity
ΔEN
For our purposes use the definitions in the chart. The
% ionic character
polarity
most polar bond determines the polarity of a molecule (i.e.
0 – 10
0 – 0.5
non-polar
if a compound contains one non-polar, and one polar
10 – 50
0.5 – 1.7
polar (covalent)
bond the molecule, as a whole, is considered to be polar)
50 – 100
1.7 +
ionic
A
B
C
D
E
F
G
Symmetrical
Draw shape.
Polarity of
ΔEN of
Polarity of
molecule?
Molecule
Lewis structure
Indicate bond
bonds (ignore
molecule
bonds
(i.e. all pulls
dipoles
shape)
cancel out)
3.1 – 2.1
H
N
H
1. NH
polar
No
polar
3
= 1.0
H
N
N
2. N
2
Br
H
3. HBr
H
Br
4. OCl
2
F
F
F
5. SF
S
6
F
F
F
S
O
O
6. SO
2
S
O
O
Cl
Cl
Cl
7. SiCl
Si
4
Cl
C-F:
Cl
F
Cl
8. CF
Cl
C
2
2
C-Cl:
F
9. XeF
4
Note: the EN
for Xe is 2.6
C-C:
H
H
10. C
H
C
C
2
4
C-H:
H
H
Q – which binary (two element) compound would have the greatest ΔEN?
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