1 A coring: Your score will be based on the number of correct matches minus the number of

incorrect matches. There is no penalty for missing matches.

Use the References to access important values if needed for this question.

The electron configurations for four main-group elements are given. Match the electron
configuration on the left with the Lewis structure on the right.

Clear All
2 2 6 2 6 2 10 6 2 10 6
1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p

1s22s22p63s23p64s2

1s22s22p63s23p64s23d104p65s24d105p66s1

1s22s22p5

B The following Lewis diagram represents the valence electron configuration of a

main-group element.

The element in period 3 that has this valence electron configuration is

Aluminium
2. A The following Lewis diagram represents the valence electron configuration
of a main-group element.

This element is in group

IIA(2)

.
According to the octet rule, this element would be expected to form an ion with
a charge of
2+

.
If is in period 5, the ion formed has the same electron configuration as the
noble gas………Kr…………

The symbol for the ion is …Sr2+…………

B.The following Lewis diagram represents the valence electron configuration of

a main-group element.

This element is in group

VIIA(17)
According to the octet rule, this element would be expected to form an ion with
a charge of
1–

.
If is in period 2, the ion formed has the same electron configuration as the
noble gas …Ne…………………

The symbol for the ion is ………F-………….

3. A Complete the following table:

(Include the word "ion.")

Formula Name
Sr^2+ …strontium ion……
Se2- …………selenide……..
Cu2+ ………Cupric ion…………..

B. Complete the following table:

Formula Name
….Na+. sodium ion
…S2-.. sulfide ion
…Cr2+ chromium(II) ion
….Ca2+ calcium ion
…Se2- selenide ion
…Mg2+ manganese(II) ion

4. Use the References to access important values if needed for this question.
 A Assuming that the octet rule is obeyed, write out the electron configuration
for the ion formed by the element magnesium, Mg. … 1s22s22p6………………….

This ion is a(n)

cation

2+
with a charge of fill and has the same electron configuration as the noble
Ne
gas .

B. Use the References to access important values if needed for this question.
Assuming that the octet rule is obeyed, write out the electron configuration for
the ion formed by the element fluorine, F………1s22s22p ………………

This ion is a(n)

anion

1- Ne
with a charge of and has the same electron configuration as the noble .

C. Use the References to access important values if needed for this question.

A monatomic ion with a charge of -2 has an electronic configuration

of 1s22s22p63s23p64s23d104p6.

This ion is a(n)

anion

Kr
It has the same electron configuration as the noble gas .

The symbol for the ion is:…Se2-………………

5. Naming Binary Ionic Compounds
Names for binary ionic compounds are easily assigned when the names of the two
elements involved are known. The name of the metallic element is given first, followed
by the stem of the nonmetallic elemental name to which the suffix -ide has been
added.
The stem of the name of a nonmetal is the name of the nonmetal with the ending
dropped.

Stem Names and Ion Formulas

of Common Nonmetallic Elements
Element Stem Formula of Ion
Bromine brom-
Chlorine chlor-
Fluorine fluor-
Iodine iod-
Nitrogen nitr-
Oxygen ox-
Phosphorus phosph-
Sulfur sulf-

A. What is the name of the compound with the formula AlCl3?

Aluminium Chloride
Name:
What is the name of the compound with the formula BaO?
Barium Oxide
Name:
What is the name of the compound with the formula K2s?
Potasium Sulfide
Name:
What is the name of the compound with the formula BaO?
Barium Oxide
Name:
What is the name of the compound with the formula KCl?
Potasium Chloride
Name:
What is the name of the compound with the formula Nai?
Sodium Iodide
Name:
6. A. The compound MgS is an ionic compound. What are the ions of which it is
composed?

Cation formula …Mg2+……

Anion formula…S2-……

b. The compound CuF is an ionic compound. What are the ions of which it is
composed?

Cation formula …Cu+……

Anion formula…F-……

7. What is the formula for aluminum chloride?

Formula: ……AlCl3…………

What is the formula for barium oxide?

Formula: ……BaO……..

What is the formula for potassium sulfide?

Formula: ……K2S……………….

What is the formula for barium oxide?

Formula: …………BaO…………..
What is the formula for potassium chloride?
Formula: ………KCl……..
What is the formula for sodium iodide?
Formula: ………NaI………
8. Complete the following table:

9. Complete the following table:

10. What is the name of the compound with the formula Al2(CO3)3 ? fill in the blank 1
Aluminum Carbonate

What is the name of the compound with the formula Ba3(PO4)2 ? fill in the blank 2
Barium Phospahte
What is the name of the compound with the formula K2SO4 ? fill in the blank 3
Potassium Sulfate

What is the formula for barium phosphate? ……… Ba3(PO4)2………..

What is the formula for potassium carbonate?

……………K2CO3………………..

What is the formula for sodium nitrate? …NaNO3……………

l1111111118

11. What is the name of the compound with the formula Ba(NO2)2 ? fill in the blank 1
Barium Nitrate

What is the name of the compound with the formula ZnI2 ? fill in the blank 2
Zinc Iodide

What is the formula for silver fluoride ? ……AgF…………………

What is the formula for aluminum carbonate ? …… Al2(CO3)3 ………

What is the name of the compound with the formula MgSO3 ? fill in the blank 1
Magnesium Sulfate

What is the name of the compound with the formula FeO ? fill in the blank 2
Iron (ii) Oxide

What is the formula for calcium sulfate ? CaSO4 ………

 ……Cu2Cr2O5 …..
What is the formula for copper(I) chromate ?

12What is the name of the compound with the formula NaNO2 ?

Sodium Nitrite
fill in the blank 1

What is the name of the compound with the formula Mg(CH3COO)2 ?

Magnesium Acetate
fill in the blank 2

What is the name of the compound with the formula BaSO3 ?

Barium Sulfite
fill in the blank 3
What is the name of the compound with the formula Mg(CN)2 ? fill in the blank 1
Magnesium cyanide

What is the name of the compound with the formula KHCO3 ? fill in the blank 2
Potassium bicarbonate

What is the name of the compound with the formula KOH ? fill in the blank 3
Potassium hydroxide

What is the name of the compound with the formula Ba(OH)2 ? fill in the blank 1
Barium hydroxide

What is the name of the compound with the formula KHCO3 ? fill in the blank 2
Potassium bicarbonate

What is the name of the compound with the formula NaCN ? fill in the blank 3
Sodium cyanide

13 What is the name of the compound with the formula NiSO3 ?

 Nickel sulfate
fill in the blank 1

What is the name of the compound with the formula CrI3 ?

Chromium triiodide
fill in the blank 2

What is the name of the compound with the formula Mn(CH3COO)2 ?

Manganese (ii) acetate
fill in the blank 3
What is the formula for manganese(II) carbonate? ……MnCO3

What is the formula for iron(III) iodide? …………FeI3……

……………
What is the formula for iron(II) fluoride? FeF2

14. Use the References to access important values if needed for this question.

Arrange the following elements in order of increasing electronegativity:

gallium, aluminum, indium, boron

Please answer this question according to the general rules you have learned
regarding periodic trends.
DO NOT base your answer on tabulated values since exceptions may occur.

Indium
fill in the blank 1 smallest
gallium
fill in the blank 2
Aluminum
fill in the blank 3
Boron
fill in the blank 4 largest

Question Content Area

Use the References to access important values if needed for this question.

Arrange the following elements in order of increasing electronegativity:

tin, iodine, tellurium, antimony

Please answer this question according to the general rules you have learned
regarding periodic trends.
DO NOT base your answer on tabulated values since exceptions may occur.

Tin
fill in the blank 1 smallest
Antimony
fill in the blank 2
iodine
fill in the blank 3
Tellurium
fill in the blank 4 largest

Arrange the following elements in order of increasing electronegativity:

germanium, arsenic, gallium, selenium

Please answer this question according to the general rules you have learned
regarding periodic trends.
DO NOT base your answer on tabulated values since exceptions may occur.

Gallium
fill in the blank 1 smallest
Germanium
fill in the blank 2
Arsenic
fill in the blank 3
Selenium
fill in the blank 4 largest
16. A. CH2O

Is CH2O polar or nonpolar?

polar

B. B. NH3

Is NH3 polar or nonpolar?..polar............

C. C. SCl2

Is SCl2 polar or nonpolar?....Polar............

D. XeO4
Is XeO4 polar or nonpolar………Nonpolar…………

E. NOBr

Is NOBr polar or nonpolar?....Polar.........

F. NICl2

Is NICl2 polar or nonpolar?...Polar...........

G. POCl3

Is POCl3 polar or nonpolar…polar………..

H. H2O

Is H2O polar or nonpolar?......Polar......

17 A.
Use the References to access important values if needed for this question.

The Lewis representation above depicts a reaction between a halogen (blue) and a
main-group element from group
2A

(red).
 2
In this representation, each Y atom needs electron(s) to complete its octet, and
Covalent
gains these electrons by forming bond(s) with atoms of X .

2 2
There are unshared electron pair(s) and bonding electron pair(s) in the
product molecule.

The bonds in the product are

covalent

7
B. The element chlorine would be expected to form covalent bond(s) in order to
obey the octet rule.

Use the octet rule to predict the formula of the , if the molecule contains only
one chlorine atom and only single bonds are formed.
Formula: ………HCl…………..
1
C. The element fluorine would be expected to form covalent bond(s) in order to
obey the octet rule.

Use the octet rule to predict the formula of the compound that would form
between fluorine and bromine , if the molecule contains only one fluorine atom and
only single bonds are formed.

Formula: ……FBr………………….

18.

What is the name of the compound with the formula SiO2 ?

Silicon dioxde

What is the name of the compound with the formula SO3?

Trioxidosilicate

What is the name of the compound with the formula CBr4 ?

Carbon tetrabromide

B. What is the formula for silicon dioxide?---------SiO2----------

What is the formula for carbon dioxide? ------CO2---------------
What is the formula for tetraphosphorus decaoxide? ---P2O5---------
c. What is the name of the compound with the formula PI3 ? ----Phosphorus
triiodide--------------------
What is the name of the compound with the formula N2F4 ?-----Nitrogen
floride----------------
What is the name of the compound with the formula SiO2 ? -----------Silicon
dioxide------------

d. What is the formula for phosphorus triiodide? ------PI3---------

What is the formula for phosphorus trichloride? ----PCl3----------------
What is the formula for dioxygen difluoride? ------O2F2----------
19. To answer the questions, interpret the following Lewis structure for SF2.

1. For the central sulfur atom:

4
... The number of lone pairs =
2
The number of single bonds =
The number 0
of double bonds =

2. . The central sulfur atom

obeys the octet rule

To answer the questions, interpret the following Lewis diagram for CO2.

1. For the central carbon atom:

0
... The number of lone pairs =
0
The number of single bonds =
The number 2
of double bonds =
 2. The central carbon atom
obeys the octet rule

To answer the questions, interpret the following Lewis structure for XeF2.

1. For the central xenon atom:

6
... The number of lone pairs =
2
The number of single bonds =
The number 0
of double bonds =

2. The central xenon atom

has an expanded octet

20. A a. What is the geometry of CO2 ?

Geometry:
linear

b. What is the geometry of SO3 ?

Geometry:
triangular

B. Please note that "geometry" refers to the molecular or ionic geometry.

a. What is the geometry of CH4 ?
Geometry:
tetrahedral

b. What is the geometry of NH4+ ?

Geometry:
 tetrahedral

C. Please note that "geometry" refers to the molecular or ionic geometry.

a. What is the geometry of O3 ?
Geometry:
bent

b. What is the geometry of NO3- ?

Geometry:
triangular

21. A.
What type(s) of intermolecular forces are expected between NOBr molecules?

Indicate with a Y (yes) or an N (no) which apply.

dipole forces Y

induced dipole (London dispersion) forces Y

hydrogen bonding
N

B. What type(s) of intermolecular forces are expected

between NH2Cl molecules?
 Indicate with a Y (yes) or an N (no) which apply.

dipole forces Y

induced dipole (London dispersion) Y

forces
hydrogen bonding N

C. What type(s) of intermolecular forces are expected between SiCl4 molecules?

Indicate with a Y (yes) or an N (no) which apply.

dipole forces N

induced dipole (London dispersion) N

forces
hydrogen bonding N

22. A. What type(s) of intermolecular forces are expected

between CH3CH2CONHCH2CH3 molecules?

Indicate with a Y (yes) or an N (no) which apply.

 dipole forces N

induced dipole (London dispersion) N

forces
hydrogen bonding Y

B. What type(s) of intermolecular forces are expected

between CH3CH2CH2CH2CH2CH2OH molecules?

Indicate with a Y (yes) or an N (no) which apply.

dipole forces N

induced dipole (London dispersion) N

forces
hydrogen bonding Y

C. What type(s) of intermolecular forces are expected

between CH3CH2COOCH3 molecules?

Indicate with a Y (yes) or an N (no) which apply.

dipole forces Y

induced dipole (London dispersion) Y

forces
hydrogen bonding Y
.