A molecule is polar when:
a.electrons are shared equally among its atoms
b.one region of the molecule has a small negative charge while another region has
a small positive charge
c.the molecule has no charged regions
d.two atoms of the same element are bonded together
The answer would be B. One region of the molecule has a small negative charge while another region has a small positive charge. However usually in polar bonds, charges or bond between the atoms are unequal (as opposed to having small equal charges).