Mcat General chemistry 2
Terms
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- Atomic radius
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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
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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
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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
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FON
strongest interaction