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Lewis Structures, Geometry and Polarity Flashcards | StudBud
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Lewis Structures, Geometry and Polarity
Lewis Structures, Geometry and Polarity
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1
Which of the following has a linear geometry?
XeF2
NO2
SO2
H2O
2
What is the angle for trigonal planar ?
170 degrees
107.3 degrees
120 degrees
109.5 degrees
3
Given ammonia's Lewis structure, what should its molecular geometry be?
tetrahedral
bent
trigonal planar
trigonal pyramid
4
When drawing Lewis structures a single bond/line between two elements represents
A shared electron
A shared pair of electrons
An octet of electrons
An unshared pair of electrons
5
The molecular geometry of __________ is square planar
XeF2
XeF4
CCl2
PH3
6
Water is a polar molecule
True
False
7
BrF
5
will have which geometry?
Trigonal Bipyramid
Octahedral
Square Pyramid
Square Planar
8
What is the bond angle of an octahedral?
160
109.5
90
54
9
Which of the following cannot mix with water? HINT- Water is polar
CH4
SO2
C2H5OH
NaHCO3
10
I am going to study before my chemistry quiz...
False
True
11
This is the Lewis Structure for AsCl
5
. This molecule's geometry is
Square Pyramid
Trigonal Bipyramid
Octahedral
Trigonal Pyramid
12
How many total atoms does a tetrahedral molecule have?
1
5
3
7
13
How many total valence electrons are present in the ammonium ion, NH
4
+
?
8
10
11
9
14
What is the bond angle of a tetrahedral?
120
109.5
I07.5
90
15
Which molecule would have a bent molecular geometry?
HCl
CCl4
AgBrO4
SO2
16
In humans (really all mammals), water's polarity is important because
It prevents red and white blood cells from dissolving into blood
All of the above
It allows dissolved ions to generate conductivity in the nervous system
It allows dissolved ions to create conductivity in the heart
17
Which of the following does NOT have four domains?
NH3
SF4
CH4
H2O
18
Why is water's polarity important for the human body?
Allows sugar to dissolve into blood
Prevents cell membranes from breaking down
Allows ions to dissolve in various fluids
All of these
19
Will the following molecule be polar? Why?
No - it displays some symmetry
No - The bonds are not polar
Yes - chlorine is diatomic
Yes - it is assymetrical and has polar bonds
20
Which molecule would have an octahedral shape?
C2H6
S8
SO8
SF6
21
A student draws this structure for BCl
3.
Is this right? If no, what should change?
No, Boron needs a double bond
No, Boron needs 4 bonds
Yes
No, Boron needs an unshared pair
22
Linear geometry has a bond angle of . . .
120o
180o
100o
145o
23
Which molecule has the geometry represented by this trigonal planar molecule?
H2S
PCl3
BF3
NH3
24
Will the following molecule be polar? Why?
Yes - it has unshared electrons
No - it is symmetrical
No - the bonds are not polar
Yes - it has polar bonds
25
Which of the following molecules has a tetrahedral shape?
SO2
CH4
H2O
NH3
26
Which formula could be octahedral?
AX7
AX6
A2X6
AX8
27
How many total valence electrons are found in IF
5
?
48
40
42
35
28
Trigonal pyramid molecules have a bond angle of . . .
104.5o
180o
107.5o
120o
29
Which molecule has a see-saw shape?
BF4-
CF4
ClF4-
SF4
30
Draw the Lewis Structure of XeF
4
. What is the Geometry?
seesaw
square planar
trigonal bipyramid
tetrahedral
31
Water, H
2
O, has a _____ molecular geometry.
square pyramidal
tetrahedral
bent
linear
32
How many total valence electrons are in the carbonate ion, CO
3
-2
?
20
18
24
22
