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A covalent hydride which does not exist as a gas at room temperature is

Chemistry
WAEC 2025

A covalent hydride which does not exist as a gas at room temperature is

  • A. H\(_2\)O
  • B. BH\(_3\)
  • C. HCl
  • D. H\(_2\)S
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Correct Answer: Option A
Explanation

Water is the only covalent hydride in the list that is a liquid at room temperature due to intermolecular hydrogen bonding. Oxygen is highly electronegative and small in size, allowing it to form strong hydrogen bonds between molecules. These forces are much stronger than the simple van der Waals or dipole-dipole interactions found in the other hydrides, resulting in a higher boiling point that keeps water in the liquid state at standard room conditions.


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