Which of the following compound has a directional bond?
Correct answer: C. Hydrogen sulphide
- A. Magnesium chloride
- B. Solid neon
- C. Hydrogen sulphide
- D. Caesium fluoride
Explanation
A directional bond, like the hydrogen sulfide (H2S) molecule, occurs when the electron pairs involved in the bond are localized in specific regions. In H2S, the sulfur atom forms a covalent bond with two hydrogen atoms. The lone pairs of electrons on sulfur create electron regions that are primarily localized around the sulfur atom, resulting in a bent molecular geometry with a bond angle of approximately 92 degrees. This directionality in the electron distribution gives rise to the molecule's unique shape and properties.
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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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