polarizability

[Christineg1G]

What is the role of polarizability when determining higher and lower melting/boiling points of compounds?

[Paige Lee 1A]

The higher polarizability of a molecule, the stronger intermolecular forces/attractions there will be, so it will be harder to break bonds. Which means its melting point and boiling point will be high.

[BeylemZ-1B]

to add on, typically, the larger the molecule, the larger the polarizability. this is because the electrons are farther away from the nucleus and the valence electrons are more shielded from the pulling power of the nucleus.

[Kavee Dodampahala 4E]

Larger molecules also have more electrons in general which makes them more polarizable.

[sarahsalama2E]

does the bigger the atom mean the stronger the ldf and dipole-dipole forces?

[VPatankar_2L]

Larger molecules will have stronger London Dispersion Forces, which means that their boiling point will be high.

[Rebekah Alfred 1J]

When the intermolecular forces are stronger, it requires more energy to break the bonds, thus making the melting/boiling point higher. For example, CHI3 will have a higher melting point than CHF3 because Iodine has a higher polarizability than Fluorine, which makes the intermolecular forces stronger and melting point higher for CHI3.

[Kylie Lim 4G]

Larger molecules have more polarizable electrons which means they will be more distorted. This makes dispersion stronger and the melting/boiling point of the compound higher

[CynthiaLy4F]

The higher the polarizability, the higher the boiling/melting points due to stronger intermolecular forces.

[005321227]

A higher polarizability indicates a higher melting point since it has higher intermolecular forces