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Q. The electronegativities of $F, Cl, Br $ and $1$ are $4.0, 3.0, 2.8, 2.5$ respectively. Hydrogen halide with a high percentage of ionic character is

Rajasthan PMTRajasthan PMT 2002Chemical Bonding and Molecular Structure

Solution:

Greater is the electronegativity difference between X and H; the greater is the ionic character. Thus ionic character of H-F is maximum.