IB Chemistry Test Prep

Category - IB Chemistry

Which of the following molecules does not display hydrogen bonding in the liquid phase?
  1. H2O
  2. CH3CH2NH2
  3. CH4
  4. NH3
  5. HF
Explanation
Answer: CH4

Hydrogen bonding occurs when hydrogen is covalently bound to the especially electronegative elements oxygen, nitrogen, and fluorine. The highly polar bond between hydrogen and these elements creates intermolecular attractive forces. The only molecule that does not contain hydrogen bound to one of these elements is CH4. Thus, CH4 does not display hydrogen bonding.
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