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10 Cards in this Set

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Atomic radius
Atomic radius decreases as we move from left to right across periodic table
Atomic radius increases as we move from up to down due to increased shielding.
Ionic radius
cation<neutral<anion
Ionization Energy
Amount of energy needed to remove least tightly bound e'n from an isolated atom
Ionization energy increases as you move from left to right or up a group
Electronegativity
Measure of atoms ability to pull e's to itself when its froming covalent bond.
e-ty increases when you go from left to right and decreases when you go down group
Covalent bond
Bond that forms when there is sharing of unpaired valence e's
Formal Charge
# of valence e's - # of unshared e's - 1/2 # of shareed e's.
Polar bond
Bond where e'n density between two atoms is uneven
Ionic Bond
Electrostatic attraction between cation and anion.(NaCl). Look for biggest e-ty difference.
Intermolecular forces
weak interactions between neutral molecules
Hydrogen bonding
FON
strongest interaction