Periodic Trends Lab printable pdf download

Lab# ____: Periodic Trends

Name: ____________________________

Date: _____________________________

Periodic Trends Lab

In 1869, aware of the need to organize elements in a meaningful way, Dmitri Mendeleev

developed a classification scheme based upon increasing molar mass. Elements that demonstrated

similar patterns of chemical behavior were placed into one of eight groups. Members of these groups

were displayed in vertical columns of his periodic table. Even though his chart was incomplete,

Mendeleev was able to predict the properties of elements yet to be discovered.

Today’s periodic table accommodates many more elements than Mendeleev’s. Although the

scheme is based upon increasing atomic number, the arrangement of elements within the chart is similar

in organization to the table published by Mendeleev in 1871. Trends in the chemical and physical

properties of elements may be seen as a periodic function of electron configuration. In this exercise you

will examine several properties of elements and observe how these properties may be interpreted with

respect to periodic law.

Procedure:

1) Go to the following webpage:

2) Record the atomic radius, electronegativity, and first ionization energy for each element listed in

Data Table 1 below. (click on the element symbol to find the above information)

3) Once the data is all filled in, open Excel and enter the data.

4) Using Excel plot the following three graphs

a. Atomic number vs. Atomic radius

b. Atomic number vs. Electronegativity

c. Atomic number vs. Ionization energy

5) Print a copy of each graph, cut the graph out and attached into your lab notebook.

How to use Excel:

1) Type the numbers only into a column using an Excel spreadsheet

2) Highlight the numbers only

3) Choose Insert ‐‐‐ Chart

4) Choose XY scatter plot. – Choose the first one‐ points with no lines‐‐‐Click Next

5) Click on the Series Tab and write in the Name of the graph (with units)‐‐‐Click Next

6) Click on the Title tab and enter the labels for the x and y axis

7) Click on the Legend tab and turn the legend off.

8) Click on the Gridlines tab and turn off the major gridlines

9) Click Next and Insert chart as object in New Sheet

10) Click Finish

11) Once your Graph is on a new sheet, right click on your graph and Click on Format Plot area

12) On the left, under area, turn the color to white and hit okay.

Periodic Trends Lab