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Periodic Trends/Properties
Trends
8
Chemistry
11th Grade
11/07/2009

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Cards

Term
Atomic Radii
Definition
Half the distance between nuclei of identical atoms bonded together
Term
Radii Trend
Definition
As you go across a period, the radii decreases
As you go down a group, the radii increases
Term
Ionization Energy
Definition
Energy required to remove one electron from a neutral atom
Term
Ionization Energy Trend
Definition
As you go across a period, the energy increases
As you go down a group, the energy decreases
Term
Electron Affinity
Definition
Energy change when an electron is gained
Term
Electron Affinity Trend
Definition
As you go across a period, electrons are gained more easily
As you go down a group, electrons are harder to gain
---(across = higher neg number, gain = lower neg number)---
Term
Electronegativity
Definition
Measure of an atom in a chemical compound to attract electrons from another atom in a compound
Term
Electronegativity Trend
Definition
Across a period, increase
Down a group, decrease or remain the same
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