# What two factors determine whether a molecule will have a dipole?

## What two factors determine whether a molecule will have a dipole?

The larger the difference in electronegativity, the larger the dipole moment. The distance between the charge separation is also a deciding factor into the size of the dipole moment. The dipole moment is a measure of the polarity of the molecule.

## How does dipole moment depend on bond angle?

Each of the chemical bonds will have a dipole moment associate with it. Dipole moment is the product of distance d between the two atoms and charge q on them. If the angle of a bond is more, then its contribution to the vector sum will be less as the component value of the bond is p * cos Ф = q d cos Ф.

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How can you tell if a molecule is polar or bonded?

(If the difference in electronegativity for the atoms in a bond is greater than 0.4, we consider the bond polar. If the difference in electronegativity is less than 0.4, the bond is essentially nonpolar.) If there are no polar bonds, the molecule is nonpolar.

### Can a molecule have a bond dipoles but not have a molecular dipole?

Is it possible for a molecule to lack bond dipoles, but have a molecular dipole? Explain. No, if a molecule has polar covalent bonds, it will have both a bond dipole and a molecular dipole.

### Is it possible for a molecule to have polar bonds and not have a net dipole?

Polar molecules have a non-zero net dipole moment. Both CO2 and H2O have two polar bonds. However the dipoles in the linear CO2 molecule cancel each other out, meaning that the CO2 molecule is non-polar. The polar bonds in the bent H2O molecule result in a net dipole moment, so H2O is polar.

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How do you identify a molecule?

Steps Used to Find the Shape of the Molecule

1. Draw the Lewis Structure.
2. Count the number of electron groups and identify them as bond pairs of electron groups or lone pairs of electrons.
3. Name the electron-group geometry.
4. Looking at the positions of other atomic nuclei around the central determine the molecular geometry.