Atom size vs. boiling point

[Quynh Vo]

How does the atomic radius of an atom correlate to its boiling point/melting point?

[Kavya Immadisetty 2B]

A bigger atomic radii increases the polarizability of the molecule which increases the amount of induced dipole- induced dipole forces in a body of that molecule. More intermolecular forces will lead to a higher boiling point. In short, bigger atomic size leads to a higher boiling point.

[Justin Quan 4I]

To add on, a bigger atomic radii would mean they have more electrons and more opportunities to create dipole-dipole forces. The larger the atomic radii basically means larger atomic size, which would therefore create more London-dispersion forces. Since bigger atomic size means stronger intermolecular forces, the boiling point must be higher as well.

[Shivam Rana 1D]

Larger molecules and atoms are also more massive, and therefore, it takes more energy to make that substance change states.

[Rory Simpson 2F]

The strength of the Van Der Waal's forces in the atom increases because of the greater number of electrons, which would increase the polarizability and thus the strength of IMFs.