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how does electronegativity relate to bond strength?? HF is less acidic than HCL but F is...

how does electronegativity relate to bond strength?? HF is less acidic than HCL but F is the highest electronegetive atom. if electronegetivity and acidity increases from left to right why is this true??

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Answer #1

electronegativity and acidity increases from left to right. This is true

But F and Cl are in same group. F is above and Cl is below. They do not appear left-right to each other. So, the rule above is not applicable here. Here comes the 2nd rule for deciding in these cases

size and acidity increases from top to bottom. Since size of Cl is more than size of F. HCl is more acidic than HF

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