In which of the following arrangements, ...

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

A

`HF lt HCl lt HBr lt Hl` : Increasing acidic strength

B

`(H_2O) lt H_(2) S lt H_(2) Se lt H_(2) Te` : increasing `pK_a` values

C

`NH_(3) lt PH_(3) lt AsH_(3) lt SbH_(3)` : Increasing acidic character

D

`CO_(2) lt SiO_(2) lt SnO_2 lt PbO_(2) ` : Increasing oxidising power

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The correct Answer is:

B

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