Which of the hydrogen compounds has the highest percentage of ionic character?
Correct answer: D. HF
- A. HCI
- B. HBr
- C. HI
- D. HF
Explanation
Criteria of electronegativity also helps us to understand the nature of bond. So, in order to decide the % of ionic nature in a compound, it is better to note the diference of electronegativity between the bonded atoms. If the diference is 1.7 or more than that, then the bond is said to be ionic. Highest ionic character is attained when two covalently bonded elements have a large electronegativity difference. Electronegativity trend for most to least is F>Cl>Br>I. This is because F is most electronegative according to Pauling Scale.
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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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