In which of the following substances will hydrogen bond be strongest? (a) HCl (b) H20 (c) HI (d) H2S

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Roop Kishore Dagar

B. H2O
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chemistry gem

Answer is b
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B
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Chemistry tutor with 5 year experience in competitive exams like IIT JEE, NEET, etc.

H2O because H bonding strength depends on the electronegativity difference between H and other atom (F,O,N, etc.). Greater the electronegativity difference greater will be the strength of H bonding.
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Water as strongest electro negative is oxygen.
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PGT CHEMISTRY 12 year experience teaching XI-XII Students

H2O
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The Hydrogen bonds occur when an element with extremely high electronegativity diff: link with H. Eg. F,O,N. etc. Among the examples in your query , we find that the extensiveness of the Oxygen - Electron lone pair hugging is most in water ; the HYDROGEN BONDS are more frequent in it providing a...
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The Hydrogen bonds occur when an element with extremely high electronegativity diff: link with H. Eg. F,O,N. etc. Among the examples in your query , we find that the extensiveness of the Oxygen - Electron lone pair hugging is most in water ; the HYDROGEN BONDS are more frequent in it providing a multiple H bond grip. Hence example 02 looks cooler. Thanks read less
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B
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PGT CHEMISTRY 12 year experience teaching XI-XII Students

H2O
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(b) water
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