Why does the presence of lone pairs contribute to the polarity of a water molecule?
A) They allow the bonds between oxygen and hydrogen to be single.
B) They increase the partial positive charge on the oxygen atom.
C) They prevent the atoms from forming a linear molecule.
D) They counter the uneven pull on electrons between the atoms.

b..

is the correct one

explanation:

covalent bonds form as valence electrons are shared between two atoms. lewis structures and structural formulas are common ways of showing the covalent bonding in organic molecules. formal charge describes the changes in the number of valence electrons as an atom becomes bonded into a molecule.

what are the two models

explanation:

you need to stop taking that class