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Questions for Discussion: Graphing the Periodic Table

Explore the linear plot of molar mass versus atomic number. Why do the elements become heavier as atomic number increases?
Next, look at atomic radius. What patterns do you notice? What do you think causes these patterns? For example, why is F smaller than Li?
Is there a relationship between atomic radius and electronegativity/ionization energy?
Display the Alkali Metals labels. What properties peak in these elements? What properties are minimized in these elements?
How does the arrangement of elements in the periodic table enable the user to identify an unknown element?