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Active Chemistry –Chapter #1-Fun with the Periodic Table - Activity #7
Name: ______________________________
Date: _____________________
Block: ___________
Activity #1.7
How Electrons Determine Chemical Behavior
What Do You Think? (page 58)
How does the arrangement of electrons in an atom determine its chemical behavior?
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Goal #1 Investigate more patterns in the electron arrangements of atoms.
Investigate (page 58)
a) Complete the chart below:
Column A
Column B
Element
Column C
Column D
Energy level
(big number)
to which the
last electron is
assigned
Sublevel (letter)
to which the last
electron is
assigned
Number of
electrons in the
sublevel to
which the last
electron is
assigned
Total number of all
electrons of the
energy level in
column A
3
p
6
8
Helium
Neon
Argon
Krypton
Xenon
Radon
b) Look at the numbers in Column A. How are these numbers related to the respective
rows of the periodic table in which each of the elements is located?
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c) What pattern do you notice in Columns B and C?
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d) What pattern do you notice in Column D?
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Active Chemistry –Chapter #1-Fun with the Periodic Table - Activity #7
Goal #2 Relate the positions of elements on the periodic table, their electron
arrangements, and their distances from the nearest noble gas, to chemical
properties of the elements.
2. a) The noble gases are chemically inactive meaning that they do not readily react. The
noble gases are ___________. The noble gases are stable because of their stable
arrangement of electrons. The other atoms cannot easily disturb this arrangement.
Compare other elements to the noble gases in the charts below
Element
being
compared
Lithium
Beryllium
Boron
2. b)
Element
being
compared
Number of
electrons
more than
those found
in closes
noble gas
(He)
1
Number of
electrons
more than
those found
in closes
noble gas
(Ne)
Energy level
(number) to
which the last
electron is
assigned
Energy
sublevel
(letter) to
which the
last electron
is assigned
Location
of element
(row) in
the
periodic
table
Location
of element
(column)
in the
periodic
table
2
S
period 2
group 1A
Location of
element
(row) in the
periodic
table
Location of
element
(column) in
the periodic
table
Energy level
(number) to
which the
last electron
is assigned
Energy
sublevel
(letter) to
which the
last electron
is assigned
Sodium
Magnesium
Aluminum
2. c) Describe any patterns you notice in charts 7A or 7B above.
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2. d)
Element
Number of
Energy level Energy
Location of
Location of
being
electrons
(number) to sublevel
element
element
compared
more than
which the
(letter) to
(row) in the (column) in
those found last electron which the
periodic
the periodic
in closes
is assigned
last electron table
table
noble gas
is assigned
(Ne)
Nitrogen
-3
2
p
Period 2
Group 5A
Oxygen
Fluorine
Active Chemistry –Chapter #1-Fun with the Periodic Table - Activity #7
2. e)
Element
being
compared
Number of
electrons
more than
those found
in closes
noble gas
(Ar)
Energy level
(number) to
which the
last electron
is assigned
Energy
sublevel
(letter) to
which the
last electron
is assigned
Location of
element
(row) in the
periodic
table
Location of
element
(column) in
the periodic
table
Phosphorus
Sulfur
Chlorine
3. a), b), c) Read instructions in the book. (page 61)
Charge
Group
Period
1
Period
2
Period
3
1A
2A
3A
4A
5A
6A
7A
8A
3. d)
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Goal #3 Assign valence numbers to elements and organize the periodic table
according to valence numbers.
4. What is the maximum number of valence electrons in the following groups?
a) ___________________________________________________________
b) ___________________________________________________________
c) ___________________________________________________________
d) ___________________________________________________________
e) ___________________________________________________________
f) ___________________________________________________________
g) ___________________________________________________________
h) ___________________________________________________________
Active Chemistry –Chapter #1-Fun with the Periodic Table - Activity #7
Chem Words (page 64)
Noble gas:
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Valence electrons:
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Checking Up (page 64)
!. ______________________________________________________________________
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2. ______________________________________________________________________
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Chemistry To Go (page 66)
1.
a) __________ b) __________ c) __________ d) __________
2.
a) __________ b) __________ c) __________ d) __________ e) __________
3.
a) __________ b) __________ c) __________ d) __________ e) __________
4.
a) ___________________ b) ___________________ c) ___________________
d) ___________________ e) ___________________ f) ___________________
5.
a) ______________________________
b) _______________________________
Goal #4 Relate electron arrangements to ionization energies.
1.
2.
Active Chemistry –Chapter #1-Fun with the Periodic Table - Activity #7
Read part 4 on pages 61-62 and answer the following questions:
What is the significance of the electron energy level?
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What distinguishes an atom from its nearest noble gas?
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What electrons are responsible for an atom’s chemical behavior?
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What are valence electrons?
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