1.

In which of the following arrangements the given sequence is not strictly according to the property indicated against it ?

Answer»

`HFltHClltHBrltHI`:increasing acidic STRENGTH
`H_(2)OltH_(2)SltH_(2)SeltH_(2)Te`:increasing `pK_(a)` values
`NH_(3)ltPH_(3)ltAsH_(3)ltSbH_(3)`:increasing REDUCING character
`CO_(2)ltSiO_(2)ltSnO_(2)ltPbO_(2)` : increasing oxidising power

Answer :B


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