Chemistry, 03.08.2021 21:30 kristofwr3444
40. In which of the following arrangements the given sequence is not strictly according to the property indicated against it?
(1) HF < HCI < HBr < HI : increasing acidic strength
(2) H20 < H2S < H2Se < H2Te : increasing pKa values
(3) NH3 < PH3 < AsH3 < SbH3 : increasing acidic character
(4) CO2 < SiO2 < SnO2 < PbO2 : increasing oxidising power
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