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WorksheetsLewis Structures
Total questions: 27
Worksheet time: 26mins
Name
Class
Date
1.
This is the correct dot diagram for sodium (Na)
a)
true
b)
false
2.
This is a correct dot diagram for fluorine (F)
a)
true
b)
false
3.
Hydrogen needs _____ electrons in its valence shell to be stable.
a)
4
b)
6
c)
8
d)
2
4.
If electrons are shared unequally then the bond is....
a)
Non-polar covalent
b)
Ionic
c)
Non-polar ionic
d)
Polar covalent
5.
If electrons are shared equally then the bond is....
a)
Non-polar covalent
b)
Ionic
c)
Non-polar ionic
d)
Polar covalent
6.
Metals and nonmetals form which kind of bond?
a)
Polar covalent
b)
Ionic
c)
Non-polar covalent
d)
Metallic
7.
How strongly an atom attracts electrons is called....................
a)
Ionization energy
b)
Electronegativity
c)
Electricity
d)
Nuclear force
8.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
9.
What is the correct structure for BF3?
a)
Option A.
b)
Option B.
c)
Option C.
d)
Option D.
10.
What is the correct Lewis Dot Structure for ammonia NH3
a)
b)
c)
d)
11.
Which is the correct molecular structure for carbon dioxide?
a)
b)
c)
d)
12.
How many total valence electrons are participating in bonding in the molecule above?
a)
8
b)
4
c)
2
d)
3
13.
NH3 has how many lone pairs?
a)
0
b)
1
c)
2
d)
3
14.
A lone pair is defined as
a)
A pair of bonding electrons
b)
One non-bonding electron
c)
A pair of non-bonding electrons
d)
A pair of electrons on the central atom
15.
What is the VSEPR theory used to predict?
a)
Bond Strength
b)
Polarity
c)
Molecular Shape
d)
Electronegativity
16.
Which molecule would have this molecular geometry?
a)
BF3
b)
CH4
c)
PCl5
d)
CO2
17.
What molecule could this be?
a)
BF3
b)
CH4
c)
H2O
d)
CO2
18.
Who could this molecule be?
a)
CH4
b)
CO2
c)
PCl5
d)
BF3
19.
Who could this be?
a)
CO2
b)
NH3
c)
H2S
d)
CH4
20.
Who could this be?
a)
H2O
b)
NH3
c)
CO2
d)
CH4
21.
What molecular geometry would PH3 have?
a)
Trigonal Pyramidal
b)
Trigonal Bipyramidal
c)
Bent
d)
Linear
22.
How many lone pairs of electrons are on the P atom in PF3?
a)
1
b)
2
c)
3
d)
0
23.
Is this molecule polar?
a)
Yes
b)
No
24.
Is this molecule polar?
a)
No
b)
Yes
25.
What is the measure of a tetrahedral bond angle?
a)
90 Degrees
b)
109.5 Degrees
c)
120 Degrees
d)
180 Degrees
26.
What is the bond angle for a trigonal pyramidal molecule?
a)
90
b)
107
c)
109.5
d)
120
27.
Will this molecule be polar or nonpolar? PH3
a)
polar
b)
nonpolar
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