Moderate

Which of the following substances has the largest intermolecular forces of attraction?

Correct answer: A. H2O

  • A. H2O
  • B. H2S
  • C. H2Se
  • D. H2Te

Explanation

The strongest intermolecular force is hydrogen bonding, which is a particular subset of dipole-dipole interactions .It occurs when a hydrogen atom is in close proximity to a highly electronegative atom; namely oxygen, fluorine, nitrogen etc. Among the given option only option A has hydrogen bond hence it is the correct answer.

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Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.

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