Question

Define diople moment​

Answer 1

Answer:

Dipole moments occur when there is a separation of charge. They can occur between two ions in an ionic bond or between atoms in a covalent bond; dipole moments arise from differences in electronegativity. ... The dipole moment is a measure of the polarity of the molecule.

Answer 2

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What is Diople Moment?

A dipole moment arises in any system in which there is a separation of charge. They can, therefore, arise in ionic bonds as well as in covalent bonds. Dipole moments occur due to the difference in electronegativity between two chemically bonded atoms.

A bond dipole moment is a measure of the polarity of a chemical bond between two atoms in a molecule. It involves the concept of electric dipole moment, which is a measure of the separation of negative and positive charges in a system.

The bond dipole moment is a vector quantity since it has both magnitude and direction. An illustration describing the dipole moment that arises in an HCl (hydrochloric acid) molecule is provided below.

$\text{\large\underline{\orange{Dipole \:Moments }}}$

Dipole moments occur when there is a separation of charge. They can occur between two ions in an ionic bond or between atoms in a covalent bond; dipole moments arise from differences in electronegativity. ... The dipole moment is a measure of the polarity of the molecule.

$\text{\large\underline{\green{ Example:- }}}$

• Dipole moments tell us about the charge separation in a molecule. The larger the difference in electronegativities of bonded atoms, the larger the dipole moment. For example, NaCl has the highest dipole moment because it has an ionic bond (i.e. highest charge separation).

Important Points:-

• The dipole moment of a single bond in a polyatomic molecule is known as the bond dipole moment and it is different from the dipole moment of the molecule as a whole.
• It is a vector quantity, i.e. it has magnitude as well as definite directions.
• Being a vector quantity, it can also be zero as the two oppositely acting bond dipoles can cancel each other.
• By convention, it is denoted by a small arrow with its tail on the negative center and its head on the positive center.
• In the case of a polyatomic molecule, the dipole moment of the molecule is the vector sum of the all present bond dipoles in the molecule.

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