In a study concerning conceptual understanding of bond
polarity, molecular polarity, VSEPR theory, Lewis structure
and molecular structure, it was found that university
students could not identify the relationship between bond
polarity and molecular polarity, could not determine
wheteher a molecule was polar or nonpolar, and
assumed that lone pair electrons did not have effect on
the molecular geometry of the molecule (Yılmaz and
Morgil, 2001).