What is a polar molecule?

Answer

A polar molecule is a particle consisting of two or more covalently bonded atoms with an asymmetric distribution of charges. This occurs in molecules that are asymmetric along at least one axis when one side contains atoms with a greater electronegativity than the other side. This results in shared electrons spending more time on the side with greater electronegativity, causing that side to have a greater negative charge most of the time.

One of the most familiar and common polar molecules on Earth is water. In water, two hydrogen atoms are bonded to one oxygen atom. However, the hydrogen atoms bond at an angle less than 180 degrees, resulting in an oxygen side and a hydrogen side of each molecule. The oxygen atom has a greater electronegativity than the hydrogen atoms and so receives a greater share of the molecule's shared electrons. This means that the hydrogen side is more positively charged than the oxygen side. Water molecules in close proximity will tend to align next to each other with each oxygen side facing the hydrogen side of another because of these opposite charges. Any polar molecule will tend to act in the same way. When water or a similar polar compound freezes, the crystal lattice it forms always tends to give maximal exposure of each positive side to adjacent negative sides.

Q&A Related to "What is a polar molecule?"
1. Determine each atom's electronegativity by using a periodic table of elements. If all the atoms have the same electronegativity, then the molecule is by default non-polar. Given
http://www.ehow.com/how_11399911_determine-molecul...
A polar molecule is going to be one that has an unequal distribution of charge. Molecules like, H20, HCl, or BrO2.
http://wiki.answers.com/Q/What_are_some_polar_mole...
( ′pō·lər ′mäl·ə′kyül ) (physical chemistry) A molecule having a permanent electric dipole moment.
http://www.answers.com/what%20is%20a%20polar%20mol...
Water (H. 2. O) is a polar solvent and each water molecule exhibits polarity. Do you know. why. ? Water is polar because of the difference in. electronegativity. between hydrogen
http://chemistry.about.com/b/2013/11/06/why-is-wat...
1 Additional Answer
Ask.com Answer for: what is polar molecule
polar molecule
NOUN
1.
a molecule in which the centroid of the positive charges is different from the centroid of the negative charges.
Source: Dictionary.com
Explore this Topic
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