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Electronegativity Worksheet Answer key, Exercises of Chemistry

Basic practice questions in electronegativity worksheet with solutions

Typology: Exercises

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Electronegativity
Worksheet
(
I
/
NameDate
P R S
I.
How are
ionic bonds
and
covalent bonds
different?
n
n
feA
&
'-
JT
-bwf"
f**
«^5
*
**
~/ulM!-i
(•*<*•-<*>
QAJO&J.
bSvJL^
»
^
$9W»ff
$&***•
tUt>
M*:
2. How
does
a
polar covalent bond
differ
from
a
non-polar covalent
bond';*
j£~~
^/U^J?
kAJ?^AA£^
C
O
3. How do
clectronegativity
values help
us
determine
the
polarity
of a
bond?
4.
Fill
in the
values
to
complete
the
following table
for
predicting bond type based
on
differences
in
electronegativity.
0.0
Non-polar
Covalent
bond
^3
Polar Covalent Bond
i
^?
Ionic
Bond
-
5.
Does
electronegativity increase
or
decrease when
you go
across
a
period
on the
periodic
table?
Does
it
increase
or
decrease when
you
move down
a
group
on the
periodic table?
6. For
each
of the
following
sets
of
elements,
identify
the
element expected
to be
most
electronegative (circle)
and
which
is
expected
to be
least electronegative (cross out), based
on
their position
in the
periodic table.
b.
c.
C
<
A/
< 0
pf2
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Electronegativity Worksheet ( I /

Name Date^

P R S

I. How are ionic bonds and covalent bonds different? n n

feA l»& '- JT -bwf" _f** *«^ 5 **** ~/ulM!-i (•<•-<>_*

QAJO&J. bSvJL^ » ^ $9W»ff $&***• tUt> M*:

2. How does a polar covalent bond differ from a non-polar covalent bond';* j£~~ ^/U^J? kAJ?^AA£^ C O

  1. How do clectronegativity values help us determine the polarity of a bond?
  2. Fill in the values to complete the following table for predicting bond type based on differences in electronegativity.

0.

Non-polar Covalent

bond

^

Polar Covalent Bond i ^?

Ionic Bond

  1. Does electronegativity increase or decrease when you go across a period on the periodic table? Does it increase or decrease when you move down a group on the periodic table?
  2. For each of the following sets of elements, identify the element expected to be most electronegative (circle) and which is expected to be least electronegative (cross out), based on their position in the periodic table.

b.

c. (^) C < A/ < 0

rs

Atom 1

Phosphorus

Cobalt

Atom 2

Silicon

Germanium

Bromine

Silicon

Potassium

Cesium

Hydrogen

Arsenic

Lithium

Iron

Selenium

a

Fluorine

4^

Nitrogen

Oxide

Phosphorus

Chloride

Chloride

3- o f

Carbon

j Electronegativity I 1 Difference Value | (^) (Non-polarC&valent, Polar, Ionic)

-f </€ -

/7. Draw the partial positive and partial negative ends of the followmgjpolar-cqyalent bonds, using the proper lowercase delta (5) sign with a charge on it. PyCtUJ Tr-fi I ~~

a)

b) 'd—As ±

b) N-~P r ^ d) O—H

<f i

Arrange meseoonded pairs in order of increasing polarity from the least polar to the most polar:

-o-^*^^ (D^ «>

(L^^ u

  1. What is a dipole?
  2. What is a polarity?

a

__ 0

2L What two factors determine if a molecule is polar or not (if it has dipole or not)?