03.03 Periodic Trends
Andrew Hom
Chemistry CP
O3.03 Periodic Trends
Part I: Atomic Radius Trend Going Across the Periodic Table
Part 2: Atomic Radius Trend Going Down A Group
Part 3: Analysis and Conclusion
After completing both graphs, answer the questions below in complete sentences. Both the question and your answer should be included in the document (along with the two graphs) that you submit to your instructor. 1) Refer to the graph that you created in Part 1 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)
In the graph that I constructed in Part 1, the graph seemed to be going down. So, this means that as the atomic number increases, the atomic radius decreases. 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)
In the graph that I have made in Part 2, the graph seemed to go up. So, this means that as the periodic number increases, so does the element’s atomic radius. 3) What element in Period 5 of the periodic table is a member of Group 14? (1 point)
The element Tin (Sn) is located in Period 5 group 14. 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)
After reviewing Part 2 of the graph, the atomic radius of Tin could be anywhere between 122 and 175. However, my best predicament would have to be 150. 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)
Percent error = fraction: | actual value minus experimental (estimated value | over actual value × 100
This equation means that you subtract to find the difference between the actual value (given in this
Chemistry CP
O3.03 Periodic Trends
Part I: Atomic Radius Trend Going Across the Periodic Table
Part 2: Atomic Radius Trend Going Down A Group
Part 3: Analysis and Conclusion
After completing both graphs, answer the questions below in complete sentences. Both the question and your answer should be included in the document (along with the two graphs) that you submit to your instructor. 1) Refer to the graph that you created in Part 1 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)
In the graph that I constructed in Part 1, the graph seemed to be going down. So, this means that as the atomic number increases, the atomic radius decreases. 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)
In the graph that I have made in Part 2, the graph seemed to go up. So, this means that as the periodic number increases, so does the element’s atomic radius. 3) What element in Period 5 of the periodic table is a member of Group 14? (1 point)
The element Tin (Sn) is located in Period 5 group 14. 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)
After reviewing Part 2 of the graph, the atomic radius of Tin could be anywhere between 122 and 175. However, my best predicament would have to be 150. 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)
Percent error = fraction: | actual value minus experimental (estimated value | over actual value × 100
This equation means that you subtract to find the difference between the actual value (given in this