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The electronegativities of F, Cl, Br, an...

The electronegativities of F, `Cl`, `Br`, and `I` are `4.0, 3.0, 2.8`, and `2.5`, respectively. The hydrogen halide with a high percentage of ionic character is

A

`HF`

B

`HCl`

C

`HBr`

D

`HI`

Text Solution

Verified by Experts

The correct Answer is:
A
Percentage ionic character is directly related to the electronegativity difference. Thus, on account of the highest electronegativity difference, `HF` has the maximum ionic character. The correct order is
`HFgtHClgtHBrgtHI`
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