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The noble gases have weak interatomic force, and consequently have very low melting and boiling points. They are all monatomic gases under standard conditions, including the elements with larger atomic masses than many normally solid elements.
From strongest to weakest, the intermolecular forces rank in the following way: 1  Strongest: Hydrogen bonding. This occurs when compounds contain OâH, NâH, or FâH bonds. Though referred to as hydrogen bonding, it's not a real bond but just a really strong intermolecular force. 2  Less strong: Dipole-dipole forces. This takes place when polar compounds are attracted to one another. Weakest: London Dispersion Forces. This takes place when temporary dipoles on nonpolar molecules attract one another. Note that intramolecular forces like covalent and ionic bonding are still much stronger than any form of intermolecular bonding.