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The p-Block Elements
Question
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Explain why inspite of nearly the same electronegativity, oxygen forms hydrogen bonding while chlorine does not.

Answer

Formation of hydrogen bonding depend on the size of atom. smaller the size greater the hydrogen bonding.although the electronegtivity is same but Oxygen has smaller size than chlorine. Smaller size favours hydrogen bonding.

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Some More Questions From The p-Block Elements Chapter

Why is BiH3 the strongest reducing agent amongst all the hydrides of Group 15 elements?

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