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Hydrogen bonds are found between water molecules.

Hydrogen bonds are the electrostatic attraction (i.e. attraction between a positive charge and a negative one) between a slightly positive hydrogen atom and a slightly negative oxygen, nitrogen or fluorine.

So in water, the attraction is between a slightly positive hydrogen atom and a neighbouring slightly negative oxygen atom.

This is due to the electronegativity of oxygen, fluorine and nitrogen, which have a high electronegativity. In water, there are two bonds in each molecule, each linking one hydrogen to the oxygen atom. The electrons have less of an attraction to the hydrogen, and so the electron cloud is distorted in favour of the oxygen. So, as there are more electrons present near the oxygen relative to the hydrogen, the oxygen is more negative relative to the hydrogen, so causing polarity. Then, there is electorstatic attraction to neighbouring hydrogen or oxygen atoms.

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13y ago

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