Understanding the periodic table composition

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Lab #4: Understanding the periodic table composition

The Periodic Table Composition

Purpose:
The purpose of this experiment is to try to find a relationship between ionization energy,electro negativity, and atomic radius by comparing them using excel made graphs.

Theory:
For many years scientists have used graphs to find similarities and differences between electro negativity, andionization these both are positive correlations since they measure almost the same thing.

Hypothesis:
When electro negativity and ionization are compared a positive correlation will be formed.Procedure:

Open Microsoft Excel and make a graph using the elements from 1 to 54 for the following things:
• Electro negativity
• Ionization
• Atomic Radius
Compare the graphs and record anysimilarity or difference between them.

Observations
FIG. 1A

FIG.1B
FIG. 2A
FIG. 2B
FIG. 3A
FIG. 3B

Analysis/discussion:
By looking at Fig.2A and Fig.3A, there is a positivecorrelation on both. Both might measure similar things since both results in almost equal correlation. On the other hand the Atomic Radius graph (Fig.1A) was the opposite of ionization (Fig.3A), and electronegativity (Fig.2A) graphs since atomic radius resulted in a negative correlation graph. It can also be seen in electro negativity and ionization graphs, that there is more similarity between thegroups than the periods. On the atomic radius graph there is more similarity between periods than the groups.

Conclusion:
By observing the graphs of ionization and electro negativity, there isn’t onlythe same trend on each one but the graphs are almost equal. They as well are both positive correlations.

Questions:

1 A. Due to electron shielding, atomic radius increases, since as you increasethe period number in a group the number of shell increases. Li for example has much less shells than Francium therefore Li’s atomic radius is smaller.

1 B. On a chloride ion there is 1 more...
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