Which one shows high %age of the ionic character
Correct answer: B. HF
- A. HI
- B. HF
- C. HCl
- D. HBr
Explanation
The ionic character of a bond is directly related to the difference in electronegativity between the bonded atoms. HF has the highest ionic character because fluorine has the greatest electronegativity (4.0) among the halogens, resulting in the largest electronegativity difference with hydrogen. HI, HCl, and HBr have lower electronegativity differences and therefore lower ionic characters. Specifically, iodine, bromine, and chlorine have electronegativities of 2.5, 2.8, and 3.0, respectively, compared to fluorine's 4.0.
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