Arrange the hydrides of Group 16 () in increasing order of their acidic strength in aqueous solution β p 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
π‘ 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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