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Arrange the following in order of proper...

Arrange the following in order of property indicated for each set:
`(i) H_(2)O,H_(2)S,H_(2)Se,H_(2)Te` - Increasing acidic character
(ii) `HF,HCl,HBr,HI` - decreasing bond enthalpy

Text Solution

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Conjugate base is in an stability order
`Ooverset(-)H ltHoverset(-)S lt Hoverset(-)Se lt H_(2) Te`
`rArr H_(2)O lt H_(2)Slt H_(2)Se lt H_(2)Te` (acidic strength)
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