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Arrange the hydrides of Group 16 () in increasing order of their acidic strength in aqueous solutionp Block Elements Chemistry Question

Question

Arrange the hydrides of Group 16 ($H_2O, H_2S, H_2Se, H_2Te$) in increasing order of their acidic strength in aqueous solution.

Answer: A

💡 Solution & Explanation

As atomic size increases down Group 16, the H-E bond length increases. This lowers the bond dissociation enthalpy, making it progressively easier to release a proton ($H^+$). Thus, acidic strength increases smoothly from $H_2O$ to $H_2Te$.

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