A Bent Molecule is a structure that consists of three atoms bonded so that one of the three serves as the vertex of an angle made by the three atoms. The angle formed will be non-linear, less than 1800. Bent structures will usually produce polar molecules if the bonded atoms have different electronegativity values.
Polarity is not defined only by the shape of the molecule; it also depends on the polarity of individual bonds.
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Molecules that contain two covalent bonds are sometimes polar.
Two reasons for non-polar molecules 1. There are no polar bonds because the electron sharing between atoms in the molecule is equal 2. All the polar bonds in the molecules are symmetrical so in effect cancel each other out
Molecules in the vapours are diatomic. All the molecules in the vapour are non-polar.
Dipole dipole interactions are between two polar molecules. As long as two molecules are polar, they form dipole dipole interactions.
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Molecules that contain two covalent bonds are sometimes polar.
Some molecules are quadrapolar, having two positives and two negatives. Most small polar molecules, like water, have one dominant positive side.
An uneven distribution of charge
Two reasons for non-polar molecules 1. There are no polar bonds because the electron sharing between atoms in the molecule is equal 2. All the polar bonds in the molecules are symmetrical so in effect cancel each other out
In these molecules the difference of the electronegativity between the two atoms is significant.
Dipole dipole interactions are between two polar molecules. As long as two molecules are polar, they form dipole dipole interactions.
Molecules in the vapours are diatomic. All the molecules in the vapour are non-polar.
Nonpolar molecules are molecules that shares electrons equally and does not have oppositely charged ends. Polar molecules are molecules with a slightly positive end and a slightly negative end as a result of electrons being shared unequally.
a non polar bond is formed between two atoms/molecules of equal electronegativity
A bond between two or more polar covalent molecules is called a Dipole-Dipole attraction (or interaction).
A polar molecule is positive on one end and negative on the opposite end. A hydrogen bond is a special attraction between polar molecules, a weak bond.