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# 3.03 Periodic Trends

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## Alysa Johnson

on 1 November 2013

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#### Transcript of 3.03 Periodic Trends

3.03 Periodic Trends
...
5.Tin's actual atomic radius is 140 pm. Use the math equation below to determine the percent error of your estimated value. (2 points)

6.The atomic radius you estimated from your graph is most likely not exactly the same as the true atomic radius of tin. There is a small percent error. What do you think caused this error? (2 points)
Alysa Johnson.
Chem.
Part one
Part Two
1.Refer to the graph that you created in Part I of this assignment. Describe the general trend or patterns that you observed in the atomic radius as you go across the periodic table. (2 points)

2.In Part II of this assignment, you graphed the atomic radius of some elements from group 14 on the periodic table. What is the general trend for atomic radius going down that group? (2 points)

3.What element in Period 5 of the periodic table is a member of Group 14? (1 point)

4.The word interpolate means to use a given line graph to find unknown points between the plotted points of the graph. Use your line graph from Part II to interpolate, or estimate, atomic radius of Tin (Sn). (1 point)

1. It looks like the atomic radius is bigger if the atomic number is small, It could be the decrease of the pull of the protons.
2. The atomic radius is bigger when the atomic in the same coullumn is bigger. Which could be the electrons in the inner shell.The give more shielding which gives the outter shell more space to spread.
Seems to be Tin is in both period 5 and group 14.

Looking at the graph, Tin may have a radius of 15
0
5. I was only about 7% over my estimated
number
My error could be from my graphtical error
In an atom the electron cloud varies. Some
times it varies by a lot and sometimes
it doesn't at all.
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