Molecule are having the highest bond energy (experimentally) is:
Correct answer: B. HF
- A. HCl
- B. HF
- C. HBr
- D. HI
Explanation
The correct option is B as the decreasing order of bond dissociation energy is HF > HCl > HBr > HI. There is a large difference between electronegativity of H and F, so the bond is stronger. As we go down the group, the difference between electronegativity decreases and therefore, bond dissociation energy also decreases.
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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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