Dipole formation © Siemens Stiftung 2018 CC BY-SA 4.0 international

Dipole formation

Image

Graphic:
Tetrahedral structure of the water molecule and formation of the dipole moment.

English, German, Spanish (CREA)
Image (37.5 kByte)
2018-10-05
The strong electronegativity difference between oxygen and hydrogen leads to a shift of electrons in the bonds. There are negative and positive partial charges within the molecule, a so-called dipole structure. This dipole structure within the water molecule is a precondition for the forming of hydrogen bridge bonds.

Information and ideas:
Dipole structure in the water as an example for the electrical dipole moment. In physics, the dipole moment is a measure for spatial charge separation: the higher the charge Q, the higher the dipole moment. The dipole moment is also larger if the charges move further apart (distance from the negative to the positive charge).
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Illustration
Chemistry; Physics
Grade 7 to 9; Grade 10 to 13
Middle/high school
Chemical compound; Molecule
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