what is Polar covalent bond ? explain
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Polar covalent bonds are a particular type of
covalent bond.
In a polar covalent bond, the electrons shared by the atoms spend a greater amount of time, on the average, closer to the Oxygen nucleus than the Hydrogen nucleus. This is because of the geometry of the molecule and the great electronegativity difference between the Hydrogen atom and the Oxygen atom.
The result of this pattern of unequal electron association is a charge separation in the molecule, where one part of the molecule, the Oxygen, has a parital negative charge and the Hydrogens have a partial positive charge.
You should note this molecule is not an ion
because there is no excess of proton or electrons, but there is a simple charge separation in this electrically neutral molecule.
Water is not the only molecule that can have polor covalent bonds. Examples of other molecules that have polar covalent bonds are
Peptide bonds and amines .
The biological consequence of polar covalent bonds is that these kinds of bonds can lead to the formation of a weak bond called a hydrogen bond.
covalent bond.
In a polar covalent bond, the electrons shared by the atoms spend a greater amount of time, on the average, closer to the Oxygen nucleus than the Hydrogen nucleus. This is because of the geometry of the molecule and the great electronegativity difference between the Hydrogen atom and the Oxygen atom.
The result of this pattern of unequal electron association is a charge separation in the molecule, where one part of the molecule, the Oxygen, has a parital negative charge and the Hydrogens have a partial positive charge.
You should note this molecule is not an ion
because there is no excess of proton or electrons, but there is a simple charge separation in this electrically neutral molecule.
Water is not the only molecule that can have polor covalent bonds. Examples of other molecules that have polar covalent bonds are
Peptide bonds and amines .
The biological consequence of polar covalent bonds is that these kinds of bonds can lead to the formation of a weak bond called a hydrogen bond.
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