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Name:___________________________________________ Period _______ Date _______________________
Section 5.3 Trends of the Periodic Table
Review: Elements on the periodic table are arranged according to their ______________ _____________ . As
a result, there is a relationship between ____________ _______________ and electron configurations.
7 Periodic Properties of the Periodic Table
- Valence Electrons, Atomic Radii, Ionic Radii, Ionization Energy, Electron Affinity,
Electronegativity, Metallic Behavior
1. Valence Electrons (define):
Why are inner-shell electrons not involved in
compound formation?
2. Atomic radius (define):
How is atomic radius determined? What units are used?
Define shielding effect:
What is the trend for atomic radius as you move across a period? Down a group?
3. Ionic Radius
Define ion.
A positive ion is called _______________.
A negative ion is called _______________.
What is the trend in ionic radius as you move across a period? Within a group?
4. Ionization energy (define):
Write the equation for the process of removing an electron from any element A.
(ionization energy)
What is the ionization energy trend within a group? Within a period?
5. Electron Affinity (define):
Write the equation for the process of an atom gaining an electron. (affinity)
What is the trend in electron affinity values as you move across a period? Within a
group?
6. Electronegativity (Define):
What is the trend in electronegativity values going across a period? Within a family?
7. Metallic Behavior (in class)