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(C) The acidic strength of hydrogen halides depends on the bond dissociation enthalpy of the $H-X$ bond. As we move down the group from $F$ to $I$,the

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$F$

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(C) The acidic strength of hydrogen halides depends on the bond dissociation enthalpy of the $H-X$ bond. As we move down the group from $F$ to $I$,the atomic size increases,which leads to a decrease in the bond dissociation enthalpy. Consequently,the ease of releasing an $H^{+}$ ion increases down the group. Therefore,the acidic strength increases in the order: $HF Thus,$HF$ has the lowest acidic strength.

Which element from the following combines with hydrogen to form a compound having the lowest acidic strength?

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