* Hydrogen bonds require specific conditions: Hydrogen bonds form between a hydrogen atom covalently bonded to a highly electronegative atom (like oxygen, nitrogen, or fluorine) and a lone pair of electrons on another electronegative atom.
* Ethane's structure: Ethane (C2H6) only contains carbon and hydrogen atoms. Carbon is not sufficiently electronegative to create the necessary polarity for hydrogen bonding. The C-H bonds are nonpolar.
In summary: Ethane lacks the electronegative atoms required for hydrogen bonding.
