SCH 4U1
Name: _________________
PERIODIC CONNECTIONS ASSIGNMENT
Part A
/26
The code letters A to Z have been assigned to the first 26 main group elements in the periodic table. The letters
do not in any way relate to the chemical symbols for these elements. Your challenge is to put the code letters in
the correct box in the following (abbreviated) periodic table, based on the properties of the elements given below.
(Yes – it is possible; No – I have not forgotten any clues)
PeriodGroup
1
2
13
14
15
16
17
1
2
3
4
[26]
Each of the following sets of letters (down) represents groups of elements with the same number of
outermost electrons:
P
E
F
K
C
Q
A
S
B
G
J
R
T
W
V
N
D
I
O
X
Y
M
U
L
Z
H
1.
G has a condensed electron configuration of [H]3s23p4
2.
T is a gas.
3.
N has three unpaired p electrons.
4.
O is an alkaline earth metal.
5.
X boils at a lower temperature than R.
6.
Atom U has two protons.
7.
PI2 is the formula of an oxide.
8.
M loses electrons more readily than Q.
9.
N has a greater atomic mass than P but a smaller atomic mass than V.
10.
The atomic size of Z is smaller than the atomic size of Y and C.
11.
The first ionization energy of F is more than the first ionization energy of J, but less than the first
ionization energy of O.
12.
W has the smallest relative atomic mass in its group.
13.
K is a liquid at 100 kPa and 25 °C.
14.
The electrons of atom A are distributed over four values of n in the ground state.
15.
The salt CR has a smaller molecular mass than the salt YR.
16.
S is the most metallic element in its group.
17.
N has a principle quantum number n = 3
18.
D has two unpaired 2p electrons
18
SCH 4U1
Name:
PERIODIC CONNECTIONS ASSIGNMENT
Part B
/18
The arrangement of elements in the periodic table is a direct consequence of the allowed values for the four
quantum numbers (n, l, m, s). If the laws of physics allowed these numbers to have different values, the appearance
of the periodic table would change. In this activity you will examine the effect on the periodic arrangement of the
elements when the quantum numbers have a different set of allowed values.
Suppose, in an alternate universe, the rules for the quantum numbers are as follows:
n = any positive integer: 1, 2, 3, 4, …
l = any value from 0, 1, 2, … n
ml = 0, 1, 2, ….
l
ms = +2
1.
Using a chart with the headings indicated below, determine the possible quantum numbers for the
energy levels in this universe.
*Hint: remember l values are associated with the following shapes: 0=s, 1=p, 2=d, 3=f
[5]
n
[1]
2.
[1]
3.
l
ml
ms
orbital name
How many electrons can be found in each orbital?
*Hint: look at ms
Draw the diagonal memory aid for this periodic table up to the 6s orbitals.
*Hint: refer to your chart in # 1 to figure out what principle energy levels the p, d, and f orbitals start at
[4]
4.
Draw the shape of the periodic table for the first 5 periods in this universe. Represent each
element
with an atomic number on the table.
Hint: use your memory aid from #3 and your constructed Periodic Table to help
[1]
5.
Label the s, p, d, and f blocks on this table.
[2]
6.
What is the atomic number of the first d-block element? What is the principle quantum number for
the first d-block element?
[1]
7.
Examine the noble gases in this universe. What is the ending of the electron configuration for each
of
these elements?
[1]
8.
Which elements would have an electron configuration of nd 2?
[1]
9.
What is the principle quantum number of the first f block element?
[1]
10.
What is the complete electron configuration for element 26?
Helpful Hints Periodic Assignment
Part B
#1 you are to construct a chart using the “new universe rules” for the first three energy levels.
List all probable outcomes eg
n
L
1
0
1
1
1
1
2
0
…
ml
0
0
1
0
ms
+2
+2
+2
+2
Orbital Name
1s
1p
1p
2s
You have to continue with this chart… there is a long list but ONLY do for the first 3 energy
levels….
Also keep them organized so you have the orbital names grouped together.
#2. In class we discussed that there are normally 2 electrons in each orbital because we had a
spin up +1/2 and spin down -1/2….Looking at the new rules for the “new universe,” how many
electrons can be found in each ordital….
#3. Our memory aid in class was….
Use the chart in number 1 to help you make
a “new” memory aid…I will start it for you…
…..
……
2s…
1s
1p
#4. In class today we shaded our periodic tables like this
Look at your chart in #1 again for help….
Under orbital names if you only have 1s, you should only have
one column instead of the origial 2
Next on our chart is the 1p, 1p,….therefore in the “new” periodic
table you should only have 2 columns for the p block NOT like the 6 that we have.
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