Does CF4 or CBr4 have a higher boiling point?
CF4 has a higher boiling point than CBr4.
This is because CF4 is a non-polar molecule, while CBr4 is a polar molecule due to the difference in electronegativity between carbon and bromine. Non-polar molecules generally have weaker intermolecular forces (e.g., London dispersion forces), which results in lower boiling points. On the other hand, polar molecules have stronger intermolecular forces (e.g., dipole-dipole interactions), leading to higher boiling points. Thus, CF4, being non-polar, will have a higher boiling point compared to CBr4.