why HF bond is stronger than HI?
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adityaaryaas:
If you look the periodic table, fluorine is nearer to hydrogen than Iodine. That means, Iodine is much bigger than both hydrogen and fluorine. Which implies that iodine and hydrogen both are small atoms but Iodine is a much bigger atom. So when two small atoms meet, they form a strong bond example is HF. But in case of HI there is a large difference in the size of hydrogen atom and iodine atom. So, the force of attraction between H and I atom is not as strong as in the case of H and F.
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· For example, HI is more acidic than HF, even though based on the last argument about electronegativity you might suspect that Flourine would be more stable than Iodine because fluorine is more electronegative than iodine (and thus HF would be a stronger acid than HI).
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