p-Block elements form acidic, basic and amphoteric oxides. Explain each property by giving two examples and also write the reactions of these oxides with water.
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Ans: In the p block, some elements are metallic some elements are non-metallic while some elements are metalloids in nature.
The oxides of metals are basic in nature and that of oxides of nonmetals are acidic in nature.
Acidic oxide
SO2 + H2O $\to $H2SO3
Basic oxide
Tl2O + 2HCl $\to $ 2TlCl +H2O
Amphoteric oxide
Al2O3 + 6HCl $\to $ 2AlCl3 + 3H2O
Al2O3 +2 NaOH $\to $ 2NaAlO2 + H2O
Reaction with water
\[{{\text{B}}_{\text{2}}}{{\text{O}}_{\text{3}}}\text{3}{{\text{H}}_{\text{2}}}\text{O}\to 2{{\text{H}}_{\text{3}}}\text{B}{{\text{O}}_{\text{3}}}\]
\[{{\text{P}}_{\text{4}}}{{\text{O}}_{\text{11}}}\text{6}{{\text{H}}_{\text{2}}}\text{O}\to \text{4}{{\text{H}}_{\text{3}}}\text{P}{{\text{O}}_{4}}\]
\[\text{C}{{\text{l}}_{\text{2}}}{{\text{O}}_{\text{7}}}\text{+}{{\text{H}}_{\text{2}}}\text{O}\to \text{HCl}{{\text{O}}_{\text{4}}}\]
