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Question
The electronegativities of F, Cl, Br and I are 4.0, 3.0, 2.8, 2.5 respectively. The hydrogen halide with a high percentage of ionic character is :
The electronegativities of F, Cl, Br and I are 4.0, 3.0, 2.8, 2.5 respectively. The hydrogen halide with a high percentage of ionic character is :
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Solution
The correct option is B HF
The order of electronegativities is as follows :
F > O > N > Cl > Br > I > S > C > H
Clearly the difference in electronegativities is maximum between fluorine and hydrogen. Therefore, HF will show maximum polar character.
The order of electronegativities is as follows :
F > O > N > Cl > Br > I > S > C > H
Clearly the difference in electronegativities is maximum between fluorine and hydrogen. Therefore, HF will show maximum polar character.
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