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A water molecule is held together by two single polar covalent bonds. 2. Because oxygen has a greater electronegativity than hydrogen, water molecules are polar with two partial negative charges near the oxygen atom and one partial positive charge near each hydrogen atom. 3. Atoms differ in their affinity for neutrons, a property called electronegativity.
Answers. 1  At first appearance a water molecule doesn't seem that special. It has 2 hydrogen atoms covalently bonded to 1 oxygen atom. But what you should know is that oxygen (electronegativity 3.5) is one of the most electronegative elements 2nd only to fluorine (electronegativity of 4.0).