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.

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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).
Illustration
Chemistry; Physics
Grade 7 to 9; Grade 10 to 13
Middle/high school
Chemical compound; Molecule
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