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Polar and Non-Polar Molecules in Chemistry
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chemstem.com
Page 6: Periodic Trends, Lewis Structures, Polarity/IMF, and VSEPR Theory
Mr. Lee says: Atomic radius increases as you go DOWN a group because you are adding more energy levels (orbitals) of electrons... 1s, 2s, 3s, 4s, etc. Atomic radius decreases as you go from LEFT...