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A hydrogen bond is a special type of dipole-dipole force that exists between an electronegative atom and a hydrogen atom bonded to another electronegative atom. This type of force always involves a hydrogen atom and the energy of this attraction is close to that of weak covalent bonds (155 kJ/mol), thus the name - Hydrogen Bonding. These attractions can occur between molecules (intermolecularly), or within different parts of a single molecule (intramolecularly).[2] The hydrogen bond is a very strong fixed dipole-dipole van der Waals-Keesom force, but weaker than covalent, ionic and metallic bonds. The hydrogen bond is somewhere between a covalent bond and an electrostatic intermolecular attraction.

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16y ago
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14y ago

Hydrogen bonds emerge from water's polar nature. Because oxygen is more electronegative than the hydrogens, it pulls electrons away disproportionally. This makes oxygen slightly negative while the hydrogens are slightly positive. Water is also a "bent" molecule which means the hydrogens hang off the oxygen at angles giving it a sort of "L" shape. Because of the shape and the slightly positive and negative sides, water is an overall polar molecule.

When water molecules come into contact with one another, the polar molecules will interact based on their positive and negative ends. The slightly negative oxygen of one molecule will pull in any positive hydrogens (four molecules at the most) of another molecule, and the hydrogens also pull in the oxygens. This attraction - bond - between the oxygen and the hydrogen is the hydrogen bond.

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13y ago

Occurs whenever a covalently bonded hydrogen is slightly positive and is attracted to a negatively charged atom some distance away.

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Q: Why do hydrogen bonds occur in water?
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Related questions

Where are the weak Hydrogen bonds located?

Hydrogen bonds occur between polar molecules such as water.


Where do h bonds occur?

Hydrogen bonds occur between polar molecules when hydrogen is linked to nitrogen, phosphorous or fluorine.


What types of bonds allow different water molecules to be attracted to one another and allows capillary action to occur?

These are hydrogen bonds between water molecules.


Adjacent water molecules are held together by bonds?

The intermolecular force that hold together adjacent water molecules are hydrogen bonds. Hydrogen bonds are the strongest type of intermolecular forces, but it is still relatively weak compared to ionic and covalent bonds. Hydrogen bonds occur because of the large difference between hydrogen atoms and the highly electronegative atoms such as F, N and O.


Can water form hydrogen bonds form with itself?

Intermolecular bonds of water molecules are hydrogen bonds.


What type of bond hold multiple water molecules togather?

Water molecules are bonded together using hydrogen bonds. Hydrogen bonds occur when positive and negative charged parts of the molecules are attracted to the opposite charge in other molecules.


How do bonds form between water molecules?

The bond between water molecules is known as a hydrogen bond.


How does hydrogen bond occur in water in one molecule?

Hydrogen bonds are INTER-molecular polar forces, not INTRA-molecular bonds.More on chemical bonds, cf. 'Related links', just below this answer.


How can one describe the chemical bonds that occur between the two atoms of hydrogen to the one atom of oxygen in a molecule of water?

These are termed to be 'covalent bonds'.


What determines the cohesiveness of water molecules?

Hydrogen bonds


What kind of bond does water commonly make?

Water is composed of molecular bonds, but forms hydrogen bonds with other water molecules. Hydrogen bonds are not actual bonds, but they cause an attraction between the water molecules, which is why water is adhesive.


Why is it important for hydrogen bonds to be weak bonds instead of strong bonds?

"Individual hydrogen bonds are weak and easily broken; however, they occur in very large numbers in water and in organic polymers, creating a major force in combination. Hydrogen bonds are also responsible for zipping together the DNA double helix." -lumenlearning