Periodic Trends Worksheet Page 17
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18Honors Chemistry - Michalek
17
Unit 06 Periodic Trends
Unit 06 – Periodic Trends
NAME: ______________________
Laboratory Activity 6B – Periodic Trends – Page Four
Part IV: Interpretation Questions
1.
Notice that the graph of first ionization potential versus atomic number consists of generally
rising values followed by sharp drops. List the elements on the five major peaks in this graph. What name
is given to this group of elements?
2.
List four elements located at the bottom of the sharp drops. What name is given to this group of
elements?
3.
Assuming that the periodic trends indicated on the graph continue, what value do you predict for
the first ionization potential of cesium, Cs, atomic number 55?
4.
What generalization can be made about the change in first ionization potential as the atomic
number increases in a period (such as Na to Ar)?
5.
What generalization can be made about the change in first ionization potential as the atomic
number increases in a group (family)?
6.
Looking at the atomic radius versus atomic number, what would you predict for the atomic
radius of Cs, atomic number 55? (Use Cl-Ar-K and Br-Kr-Rb as examples.)
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