Water is able to form hydrogen bonds because
A) oxygen has a valence of 2.
B) the water molecule is shaped like a tetrahedron.
C) the bonds that hold together the atoms in a water molecule are polar covalent bonds.
D) the oxygen atom in a water molecule has a weak positive charge.
E) each of the hydrogen atoms in a water molecule is weakly negative in charge.
Answer: C) the bonds that hold together the atoms in a water molecule are polar covalent bonds.