H20 is polar in nature. It is fundamentally because oxygen is more electronegative than hydrogen and the shared electrons tend to be near oxygen. This may be because the atomic number of oxygen is more than that of hydrogen. But in the bond I don't understand how the 2 shared electrons experience more force from the oxygen side than they do from the hydrogen side. As the 2 electrons are experiencing the force of 2 protons from both the sides. Are you getting it, what I am trying to convey?