Periodic Trends Lab

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Periodic Trends Lab
Purpose:
1. Examine atomic radius, electronegativity, and first ionization energy of elements.
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2. Create scatter plots of atomic radius, electronegativity, and 1
ionization energy with atomic number
3. Discover periodic and group trends for these properties.
Pre-Lab
Using your textbook or Internet, define the following terms IN YOUR OWN WORDS.
a) Electronegativity
b) Atomic Radius
c) Ionization Energy
d) Period
e) Group
Procedure:
1. Google ACS Periodic Table to find the website with the following URL:
2. Create a data table in Excel on the computer. You may copy and paste the one I have provided. Enter the
data described in Steps 3 and 4.
3. Click on each element listed in Data Table 1 and record the atomic radius, electronegativity, and first
ionization energy into your data table.
4. Create a graph for Atomic Radius vs. Atomic Number. Follow the directions below to use Excel to plot
the graph.
a) On the Excel spreadsheet highlight the numbers in columns for Atomic Number and Atomic Radius
b) Choose Insert --- Chart
c) Choose scatter plot. – Choose the bottom right one- scatter with straight lines and markers
d) Click on the Layout Tab and Chart Title. Label your first graph: Atomic Radius vs. Atomic Number
e) Click on the Axis Titles and label the Vertical Axis: Atomic Radius (Angstroms) and horizontal axis:
Atomic Number
f) Click on Gridlines and turn on major gridlines for both horizontal and vertical.
g) Save the graph in a word document.
5. Create a graph for Electronegativity vs. Atomic Number. Save the graph in a Word document.
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6. Create a graph for 1
Ionization Energy vs. Atomic Number. Save the graph Word document.
7. Fit all 3 graphs on one page. Then, print the page.

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