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ChemistryNEET 2021Group 15 and 16: nitrogen, oxygen families

The p-Block Elements

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

  1. A.HF < HCl < HBr < HI : increasing acidic strength
  2. B.H2O<H2S<H2Se<H2Te\mathrm{H_2O < H_2S < H_2Se < H_2Te} : increasing pKa\mathrm{p}K_a values✓
  3. C.NH3<PH3<AsH3<SbH3\mathrm{NH_3 < PH_3 < AsH_3 < SbH_3} : increasing acidic character
  4. D.CO2<SiO2<SnO2<PbO2\mathrm{CO_2 < SiO_2 < SnO_2 < PbO_2} : increasing oxidising power

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

More from this chapter in past papers

From Chemistry › The p-Block Elements › Group 15 and 16: nitrogen, oxygen families — lectures, notes and every past question on it.

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