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Polarity

QuestionAnswer
What is Polarity? The tendency of a molecule, or compound, to be attracted or repelled by electrical charges because of an asymmetrical arrangement of atoms around the nucleus.
How do you determine the polarity of a molecule? First draw the Lewis Dot Structures. Then decide if the molecules are symmetric. A molecule is non-polar if the charge distribution is symmetric and it is polar if the charge distribution is not symmetric.
True or False: if a molecule has lone pairs it is polar. True
What is Electronegativity? The tendency of an atom in a molecule to attract the electrons in a chemical bond
True or False: Electronegativity increases when reading left to right of a periodic table. True
True or False: Electronegativity increases when going down the periodic table. False
Which has a higher Electronegativity Carbon or Oxygen? Oxygen
What is Delta Negative? Delta Negative: the pull of the most electronegative atom.
What is Delta Positive? Delta Positive: the pull of the least electronegative atom
True or False: if a molecule is symmetric it is polar. False
Which molecule is more polar Br2 or HBr? HBr
Which molecule is more polar H2O or H2S? H2O
Which molecule is more polar CCl4 or PCl3? PCl3
Created by: EmilyKeilman