Download Introduction: Elements on the periodic table are arranged

Periodic Trends – A Graphical Approach
Introduction: Elements on the periodic table are arranged in such a way that they exhibit
patterns in their properties. In this activity, you will graph their properties and analyze their
patterns. You will determine the trends for the following properties: atomic radius,
electronegativity, and ionization energy.
You will have one word doc with three document sections. Save to your folder as last name,
then PT trends. Save as you go and print as you complete each one. ****If you do not
follow these directions and you begin to enter data for the next graph in Excel it will alter
the first graph in your word document!!!!
Section #1: pre-work, electronegativity graph, answers to electronegativity questions in
complete sentences. SAVE on your flash drive and PRINT at home when completed.
Section #2: Atomic radii graph and answers to the atomic radii questions. SAVE on your
flash drive and PRINT at home when completed.
Section#3: Ionization energy graph and answers to the ionization energy questions. SAVE
on your flash drive and PRINT at home when completed.
Pre Work:
Go to google and define the following terms:
1.
2.
3.
4.
5.
Electronegativity
Atomic radius
Ionization energy
Period
Group
Graph #1: Electronegativity vs Atomic Number
1. Open an excel spreadsheet.
2. In column A, going down, type the numbers 1-20, 31-38, and 49-54. There are 34
numbers in total and these represent the atomic number of the elements from the periodic
table.
3. In column B, going down, type the electronegativity values for the elements with the
atomic numbers you listed in column A. You will find these values on the appropriate
periodic table attached.
4. Highlight all of the data in columns A and B.
5. Click on insert (top tab – not right click).
6. Click on the scatter tab at the top.
7. Look at the scatter options and choose with straight lines and markers.
8. Under chart tools at the top click on layout.
9. Click on chart title and put your graph title.
10. Click on Axis title and put in labels/units for each axis.
11. Click on copy at the top left.
12. Paste the graph into your word document.
13. Under the graph answer the questions below in complete sentences.
Electronegativity Analysis Questions (answer in complete sentences)
1. Examine your graph. Find the atomic numbers 3-9 that correspond with the elements in
period 2. IN GENERAL what happens to electronegativity values as you move across a
period (increase or decrease)?
2. Examine your graph. Find the atomic numbers 11-17 that correspond with the elements in
period 3. IN GENERAL what happens to electronegativity values as you move across a
period (increase or decrease)?
3. Examine your graph. Find the atomic numbers 1, 3, and 11 that correspond with
elements in group 1. IN GENERAL what happens to electronegativity values as you
move down the group (increase or decrease)?
4. Summary of the trend for electronegativity: Electronegativity ________________ across
a period and ________________ down a group.
Graph #2: Atomic Radii vs Atomic Number
1. Open an excel spreadsheet.
2. In column A, going down, type the numbers 1-20, 31-38, and 49-54. There are 34
numbers in total and these represent the atomic number of the elements from the periodic
table.
3. In column B, going down, type the atomic radii values for the elements with the atomic
numbers you listed in column A. You will find these values on the appropriate periodic
table attached.
4. Highlight all of the data in columns A and B.
5. Click on insert (top tab – not right click).
6. Click on the scatter tab at the top.
7. Look at the scatter options and choose with straight lines and markers.
8. Under chart tools at the top click on layout.
9. Click on chart title and put your graph title.
10. Click on Axis title and put in labels/units for each axis.
11. Click on copy at the top left.
12. Paste the graph into your word document.
13. Under the graph answer the questions below in complete sentences.
Atomic Radius Analysis Questions (answer in complete sentences)
1. Examine your graph. Find the atomic numbers 3-9 that correspond with the elements in
period 2. IN GENERAL what happens to atomic radius values as you move across a
period (increase or decrease)?
2. Examine your graph. Find the atomic numbers 11-17 that correspond with the elements in
period 3. IN GENERAL what happens to atomic radius values as you move across a
period (increase or decrease)?
3. Examine your graph. Find the atomic numbers 1, 3, and 11 that correspond with
elements in group 1. IN GENERAL what happens to atomic radius values as you move
down the group (increase or decrease)?
4. Summary of the trend for atomic radius: Atomic radius ________________ across a
period and ________________ down a group.
Graph #3: Ionization Energy vs Atomic Number
1. Open an excel spreadsheet.
2. In column A, going down, type the numbers 1-20, 31-38, and 49-54. There are 34
numbers in total and these represent the atomic number of the elements from the periodic
table.
3. In column B, going down, type the ionization energy values for the elements with the
atomic numbers you listed in column A. You will find these values on the appropriate
periodic table attached.
4. Highlight all of the data in columns A and B.
5. Click on insert (top tab – not right click).
6. Click on the scatter tab at the top.
7. Look at the scatter options and choose with straight lines and markers.
8. Under chart tools at the top click on layout.
9. Click on chart title and put your graph title.
10. Click on Axis title and put in labels/units for each axis.
11. Click on copy at the top left.
12. Paste the graph into your word document.
13. Under the graph answer the questions below in complete sentences.
Ionization Energy Analysis Questions (answer in complete sentences)
1. Examine your graph. Find the atomic numbers 3-9 that correspond with the elements in
period 2. IN GENERAL what happens to Ionization Energy values as you move across a
period (increase or decrease)?
2. Examine your graph. Find the atomic numbers 11-17 that correspond with the elements in
period 3. IN GENERAL what happens to Ionization Energy values as you move across a
period (increase or decrease)?
3. Examine your graph. Find the atomic numbers 1, 3, and 11 that correspond with
elements in group 1. IN GENERAL what happens to Ionization Energy values as you
move down the group (increase or decrease)?
4. Summary of the trend for Ionization Energy: Ionization Energy ________________
across a period and ________________ down a group.