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Why is H(2)S less acidic than H(2)Te ?...

Why is `H_(2)S` less acidic than `H_(2)Te` ?

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(1) Sulphur is more electronegative than Tellurium.
(2) Bond energy of `S-H` in `H_(2)S` (347`"kJ mol"^(-1)`) more than the bond energy of `Te-H` (238`"kJ mol"^(-1)`).
(3) Hence `H_(2)Te` dissociates more giving `H^(+)` (or `H_(3)O^(+)`) than `H_(2)S` in the solution. Therefore `H_(2)S` is less acidic than `H_(2)Te`.
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