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Lewis Structures, VSEPR and Polarity

Total questions: 47

Worksheet time: 3hrs 43mins

Name
Class
Date
1.

What is a valence electron?

a)

electron found in a middle shell

b)

electron found in outermost shell

c)

electron found in innermost shell

d)

electron not found in a shell

2.

Ionic bonding involves

a)

transfer of electrons

b)

sharing of electrons

c)

holding onto electrons

d)

electrons are not involved

3.

What do atoms that form positive ions tend to do?

a)

lose electrons

b)

gain electrons

c)

lose protons

d)

gain protons

4.

What usually forms a positive ion?

a)

metal

b)

nonmetal

c)

metalloid

d)

there is no way to tell

5.

Covalent compounds

a)

contain a sea of electrons

b)

share electrons

c)

transfer electrons

d)

conduct electricity

6.

What 2 types of atoms make a covalent bond?

a)

2 metals

b)

2 noble gases

c)

2 nonmetals

d)

1 metal & 1 nonmetal

7.

What type of bond forms between Be & F?

a)

no bond forms

b)

covalent bond

c)

ionic bond

d)

metallic bond

8.

How many valence electrons does Oxygen have?

a)

8

b)

5

c)

6

d)

1

9.

By replacing the element symbol, this could be a diagram of which element?

a)

Li

b)

Al

c)

C

d)

Be

10.

Which geometric molecular shape is shown?

a)

bent

b)

trigonal planar

c)

trigonal pyramidal

d)

tetrahedral

11.

Is this molecule polar or nonpolar?

a)

polar

b)

nonpolar

12.

Which geometric molecular shape is shown?

a)

bent

b)

trigonal pyramidal

c)

tetrahedral

d)

trigonal planar

13.

Is this molecule polar or nonpolar?

a)

polar

b)

nonpolar

14.

Which geometric molecular shape is shown?

a)

trigonal planar

b)

linear

c)

bent

d)

trigonal pyramidal

15.

Is this molecule polar or nonpolar?

a)

polar

b)

nonpolar

16.
Three pairs of electrons are shared in a
a)
Single bond
b)
Double bond
c)
Triple bond
17.

A covalent bond is

a)

a bond that shares electrons metallicaly

b)

A bond that shares electrons between non metals

c)

Metalloids bonding

d)

metals and nonmetals bonding

18.

Draw the lewis dot structure for F2. Which of the following is the correct Lewis dot structure for the molecule F2?

a)

A

b)

B

c)

C

d)

D

19.

How many electrons are shared in each bonding line?

a)

1

b)

2

c)

3

d)

4

20.

Which of these is the correct Lewis structure for NH3?

a)
b)
c)
d)
21.

How many total valence electrons are participating in bonding in the molecule above?

a)

8

b)

4

c)

2

d)

3

22.

Is this molecule polar or nonpolar? Hint: notice the bonds are not all identical.

a)

polar

b)

nonpolar

23.

When drawing Lewis structures, only __________ electrons are used.

a)

inner shell

b)

core

c)

valence

d)

stable

24.
Atoms of H only form _________ bonds.
a)
Double
b)
Single
c)
Multiple
d)
Triple
25.
The theory that is used to predict the arrangement of atoms about a central atom is called?
a)
Valence shell repulsion
b)
Valence shell electron sharing
c)
Valence shell electron pair repulsion
d)
Valence electron shell repulsion pair
26.
A molecule of methane has what shape?
a)
Tetrahedral
b)
Triangular
c)
Pyramidal
d)
Octahedral
27.
A molecule of water has what shape?
a)
Linear
b)
Tetrahedral
c)
Bent
d)
Triangular
28.
 Lone electron pairs in a molecule...
a)
Never exist
b)
Are lost in space
c)
Creates an isotope
d)
Push the bonded atoms closer
29.

Choose the correct shape for this molecule:

a)

Trigonal planar

b)

Trigonal pyramidal

c)

Bent

d)

Tetrahedral

30.

NH3 has how many lone pairs?

a)

0

b)

1

c)

2

d)

3

31.

What is the molecular shape of H2S?

a)

linear

b)

trigonal planar

c)

bent

d)

tetrahedral

32.
A binary covalent bond exists between
a)
2 metals
b)
1 metal and 1 nonmetal
c)
2 nonmetals
d)
Any 2 elements
33.
What is the name of the following compound?
S6O3
a)
sulfurehexa trioxide
b)
hexasulfur trioxide
c)
hexasulfide trioxide
d)
trioxygen hexasulfide
34.

P2O5

a)

Phosphorus Oxide

b)

Pentaphosphorus Dioxide

c)

Diphosphorous pentoxide

d)

Phosphoric Oxygen

35.

The electrons in a polar covalent molecule are shared...

a)

Evenly

b)

Unevenly

c)

Electrons are not shared

d)

None of the Above

36.

The electrons in a nonpolar covalent molecule are shared...

a)

Evenly

b)

Unevenly

c)

Electrons are not shared

d)

None of the Above

37.

In a polar covalent bond, the electrons gather around...

a)

The atom with the Greatest Electronegativity

b)

The atom with the Lowest Electronegativity

c)

Each atom Equally

d)

None of the Above

38.

The polarity of a bond is determined by...

a)

The sum of the electronegativities of the two atoms

b)

The difference in the electronegativities of the two atoms

c)

The charges of the atoms

d)

None of the Above

39.
What geometry will this molecular structure have?: CCl4
a)
bent
b)
tetrahedral
c)
linear
d)
trigonal pyramidal
40.
Choose the correct shape for this molecule:
a)
Bent
b)
Linear
c)
Tetrahedral
d)
Trigonal pyramidal
41.

What is the molecular geometry for this molecule?

a)

Bent

b)

Trigonal pyramidal

c)

Trigonal planar

d)

Linear

42.
What geometry will this molecular structure have?: H2S
a)
bent
b)
tetrahedral
c)
linear
d)
trigonal pyramidal
43.

Is this molecular nonpolar or polar?

a)

polar

b)

nonpolar

44.
Choose the correct shape for this molecule:
a)
Trigonal planar
b)
Trigonal pyramidal
c)
Tetrahedral
d)
Linear
45.

Choose the correct shape for this molecule:

a)

Trigonal planar

b)

Trigonal pyramidal

c)

Bent

d)

Tetrahedral

46.

Is this molecule polar or non-polar? (Notice the bonds are not all identical)

a)

Non-polar

b)

Polar

47.

Is this molecule polar or non-polar?

a)

Non-polar

b)

Polar

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