MOLECULAR POLARITY
vs. BOND
POLARITY
BOND
POLARITY
~
refers to the equal (______________) or unequal (______________) sharing of
electrons
~
What makes a bond polar (covalent)?
* If the bond occurs between two
_____________________ nonmetals
MOLECULAR
POLARITY
~
refers to the symmetry (______________) or asymmetry (______________) of a
molecule
~
What makes a molecule asymmetrical?
* If there are
______________________________________ around the central atom.
and/or
* If the surrounding atoms are
different ____________________________________
POLAR MOLECULE
WITH POLAR COVALENT BONDS
unshared
e- pair on central atom makes the molecule polar
bond
is between 2 different nonmetals – so bond is polar covalent
NONPOLAR MOLECULE
WITH POLAR COVALENT BONDS
no unshared
e- pairs on central atom
bond is between 2
AND surrounding atoms are same different nonmetals, so bond
element, so molecule is NONPOLAR. is polar covalent
Special Cases Regarding Molecular Polarity:
~ When there are only 2 atoms in the compound or ion…
*
examples: F2 or HF
