Ap Chemistry Michalek - Unit 7: Atomic Structure And Periodicity Worksheet Page 24
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29AP Chemistry--Michalek
24
Unit 7 Atomic Structure and Periodicity
7.12 Periodic Trends in Atomic Properties
Read and outline 7.12
Define:
First ionization energy
Second ionization energy
Electron affinity
Atomic Radii
On page 327 there are ionization energies for Aluminum. Look at the I values, how can you tell that Aluminum is a 3+
charge?
What are the trends for:
Ionization energy
Electron Affinity
Electronegativity
Atomic Radii
7.12 Notes
Atomic Radii
o Half the distance of 2 nuclei
o across the periodic table decrease because of the nuclear
charge
o down the periodic table it increases because of the added
energy levels in the electron cloud.
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