NEET Exam Model Paper 2

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Question : 136 of 180

Marks: +1, -0

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

NH3<PH3<AsH3<SbH3 : increasing acidic character
CO2<SiO2<SnO2<PbO2: increasing oxidising power
HF<HCl<HBr<HI: increasing acidic strength
H2O<H2S<H2Se<H2Te : increasing pKa values

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