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Vespr, LS and Naming

Total questions: 86

Worksheet time: 1hrs 11mins

Name
Class
Date
1.
Which molecule would have this shape?
a)
BF3
b)
CH4
c)
PCl5
d)
CO2
2.
Which of these has a linear molecular shape?
a)
SCl2
b)
SiH4
c)
NH3
d)
O2
3.
One can predict the shape of a molecule by drawing its Lewis structure and
a)
balancing the oxidation numbers.
b)
accounting for nonbonded pairs of valence electrons.
c)
determining the empirical formula.
d)
identifying the presence of polyatomic ions.
4.
According to the VESPR theory  three electron pairs give a
a)
linear shape
b)
bent shape
c)
trigonal planar shape
d)
tetrahedral shape
5.
According to the VESPR theory four electron pairs give a
a)
linear shape
b)
bent shape
c)
trigonal planar shape
d)
tetrahedral shape
6.
What is the VSEPR theory used to predict?
a)
Bond Strength
b)
Polarity
c)
Molecular Shape
d)
Electronegativity
7.
According to VSEPR, molecules adjust their shapes to keep which of the following as far away as possible?
a)
Pairs of valence electrons
b)
Inner shell electrons
c)
Mobile Electrons
d)
Electrons closest to the nucleus
8.
BCl3 would have what structure?
a)
linear
b)
tetrahedral
c)
trigonal planar
d)
trigonal pyramidal
9.

The ------ model helps predict the shape of a molecule.

a)

VESPR

b)

Electron

c)

Lewis

10.

The model is based on the principle that electron pairs around the central atom ------ each other.

a)

bond

b)

attract

c)

repel

11.

The ------ of the molecule determines the properties of the compounds.

a)

density

b)

shape

c)

mass

12.

What is the correct Lewis Dot Structure for ammonia NH3

a)
b)
c)
d)
13.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
14.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
15.

Is this the correct structure for CH2O?

a)

Yes

b)

No

16.
Which of the following is an acceptable Lewis structure for CH3Cl?
a)
Option A
b)
Option B
c)
Option C
d)
Option D
17.
Three pairs of electrons are shared in a
a)
Single bond
b)
Double bond
c)
Triple bond
18.
What is the correct formula for this molecule?
a)
Si4F
b)
SiF4
c)
SiF
d)
Si4F4
19.

Which of the following compounds has only single bonds?

a)

I only

b)

II only

c)

III only

d)

I and III

e)

III and IV

20.

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

a)

Li

b)

Al

c)

C

d)

Be

21.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
22.
Each line in a Lewis Structure represents __________ electron(s).
a)
3
b)
2
c)
1
d)
4
23.

Which image could be a representation of NH3?

a)

A

b)

B

c)

C

24.

NH3 has how many lone pairs?

a)

0

b)

1

c)

2

d)

3

25.

CCl4 has how many double bonds?

a)

0

b)

1

c)

2

d)

3

26.

In HCN (Carbon is usually the central atom) what kind of bond is between the C and N

a)

Single

b)

Double

c)

Triple

27.
How many electrons should Lithium have around its Lewis dot model?
a)
1
b)
2
c)
3
d)
4
28.
How many electrons should Beryllium have around its Lewis dot model?
a)
1
b)
2
c)
3
d)
4
29.
How many electrons should Boron have around its Lewis dot model?
a)
1
b)
3
c)
5
d)
7
30.
How many electrons should Carbon have around its Lewis dot model?
a)
1
b)
3
c)
4
d)
5
31.
How many electrons should Nitrogen have around its Lewis dot model?
a)
1
b)
3
c)
4
d)
5
32.
How many electrons should Oxygen have around its Lewis dot model?
a)
5
b)
6
c)
7
d)
8
33.
How many electrons should Flourine have around its Lewis dot model?
a)
5
b)
6
c)
7
d)
8
34.
How many electrons should Neon have around its Lewis dot model?
a)
5
b)
6
c)
7
d)
8
35.
How many electrons should Sodium have around its Lewis dot model?
a)
1
b)
2
c)
3
d)
4
36.
How many electrons should Magnesium have around its Lewis dot model?
a)
1
b)
2
c)
3
d)
4
37.
How many electrons should Aluminium have around its Lewis dot model?
a)
1
b)
2
c)
3
d)
4
38.
How many electrons should Phosphorus have around its Lewis dot model?
a)
2
b)
4
c)
5
d)
7
39.
How many electrons should Argon have around its Lewis dot model?
a)
5
b)
6
c)
7
d)
8
40.
How many electrons should Helium have around its Lewis dot model?
a)
1
b)
2
c)
7
d)
8
41.
Hydrogen needs _____ electrons in its valence shell to be stable.
a)
4
b)
6
c)
8
d)
2
42.
 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
43.

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

44.

Ionic bonding involves

a)

transfer of electrons

b)

sharing of electrons

c)

holding onto electrons

d)

electrons are not involved

45.

What do atoms that form positive ions tend to do?

a)

lose electrons

b)

gain electrons

c)

lose protons

d)

gain protons

46.

What usually forms a positive ion?

a)

metal

b)

nonmetal

c)

metalloid

d)

there is no way to tell

47.

Covalent compounds

a)

contain a sea of electrons

b)

share electrons

c)

transfer electrons

d)

conduct electricity

48.
Why do elements bond?
a)
To be friends
b)
To create a new element
c)
To become stable
49.

Nonmetals tend to

a)

gain electrons

b)

lose electrons

50.

Metals tend to

a)

gain electrons

b)

lose electrons

51.

Is this compound ionic or covalent?

a)

ionic

b)

covalent

52.

a)

ionic

b)

covalent

c)

metallic

d)

acid

53.

H20 - name?

a)

hydrooxic acid

b)

hydrogen oxygen

c)

water

d)

hydrogen oxide

54.
K20 - name?
a)
potassium dioxide
b)
potassium oxide
c)
potassium oxygen
d)
dipotassium dioxide
55.

CaF2- name?

a)

calcium fluorate

b)

calcium fluoride

c)

fluoride calcite

d)

fluorine calciumate

56.

Na2SO4- name?

a)

sulfur sulfate

b)

sodium sulfide

c)

sodium sulfate

d)

sodium oxygenate

57.

HCl- name?

a)

hydrogen chloride

b)

chlorine hydrogen

c)

hydrogen chlorine

d)

hydrogen chlorate

58.

LiNO3- name?

a)

lithium oxygenate

b)

nitrogen lithate

c)

lithium nitride

d)

lithium nitrate

59.

MgO- name?

a)

oxygen magnesium

b)

magnesium oxide

c)

magnesium oxate

d)

magnesium oxygenate

60.

BaClO3- name?

a)

barium chlorate

b)

barium chloride

c)

chlorine bariate

d)

chlorine baride

61.

KH- name?

a)

potassium hydrate

b)

potassium hydrogen

c)

potassium hydride

d)

hydrogen potassiate

62.

LiOH- name?

a)

hydrogen lithium

b)

lithium oxyhydride

c)

lithium oxide

d)

lithium hydroxide

63.

HI

a)

-ide

b)

-ate

64.

HI - name?

a)

iodine hydrogenide

b)

hydrogen iodine

c)

hydrogen iodide

d)

hydrogen iodate

65.

H2SO4

a)

-ide

b)

-ate

66.

H2SO4- name?

a)

hydrogen sulfate

b)

hydrogen sulfide

c)

sulfur hydrogen

d)

sulfide hydrogen

67.

Which formula shows potassium iodide?

a)

KI

b)

Ki

c)

KIO3

d)

KIO2

68.

KOH

a)

Carbon oxide

b)

potassium oxide

c)

potassium hydride

d)

potassium hydroxide

69.
What is the correct name of the compound with the formula MgO?
a)
magnesium oxygen
b)
magnesium oxide
c)
manganese oxygen
d)
manganese oxide
70.
What is the correct name of the compound with the formula KH?
a)
potassium hydrogen
b)
potassium peroxide
c)
potassium hydride
d)
potassium monohydride
71.
What is the correct name of the compound with the formula CaO?
a)
calcium oxide
b)
calcium oxygen
c)
calcium monoxide
d)
monocalcium monoxide
72.
What is the correct name of the compound with the formula KCl?
a)
potassium chloride
b)
potassium chlorine
c)
potassium monochloride
d)
potassium monochlorine
73.
phosphorus trichloride
a)
KCl3
b)
PCl3
c)
K3Cl
d)
P3Cl
74.
silicon dioxide
a)
SO2
b)
NaO2
c)
SiO2
d)
SiO
75.
diphosphorus pentoxide
a)
P2O5
b)
PO5
c)
P5O2
d)
P2O6
76.
SiCl4
a)
silicon tetrachloride
b)
silicon quadchloride
c)
monosilicon tetrachloride
d)
silicon chloride
77.
The chemical formula of sulfur hexabromide is
a)
SBr₆
b)
S₆Br
c)
S(VI)Br
d)
S6Br
78.
The chemical formula of carbon tetrachloride is
a)
CCl
b)
C₄Cl
c)
CCl₄
d)
C(IV)Cl
79.
The chemical formula of dinitrogen textroxide is
a)
Ni₂O₄
b)
NiO
c)
N₂O₄
d)
NiO₂
80.
The name of P₄S₁₀ is
a)
phosphorous sulfide
b)
phosphorus sulfide
c)
tetraphosphorus decasulfide
d)
phosphorus (X) sulfide
81.
The chemical formula of tetraphosphorus heptaoxide is
a)
F₄O₁₀
b)
P₄O7
c)
PO
d)
P₁₀O₄
82.
The name of SO₃ compound is
a)
sulfate
b)
sulfur oxide
c)
sulfur trioxide
d)
monosulfur trioxide
83.
The chemical formula of dinitrogen textroxide is
a)
Ni₂O₄
b)
NiO
c)
N₂O₄
d)
NiO₂
84.
What is the formula for Hexaboron Monosilicide
a)
B6Si
b)
BSi
c)
BSi6
d)
B6Si6
85.
What is the OFFICIAL name for H2O
a)
Hydrogen Oxide
b)
Oxygen Dinitride
c)
Agua
d)
Dihydrogen Monoxide
86.
BrO3
a)
bromine oxide
b)
monobromine trioxide
c)
bromine trioxide
d)
bromine (III) oxide

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