The correct order of acidic strength is
Show Hint
The acidic strength of non-metallic oxides increases along the periodic table.
- $K_2O > CaO > MgO$
- $CO_2 > N_2O_5 > SO_3$
- $Na_2O > MgO > Al_2O_3$
- $Cl_2O_7 > SO_2 > P_4O_{10}$
The Correct Option is D
Solution and Explanation
The correct order of acidic strength is Cl2O7 > SO2 >P4O10
For non-metallic oxides, acidic strength increases along the periodic table.
The correct order of acidic strength is based on the ability of the compounds to release protons (H+) in an aqueous solution.
- Cl2O7 (dichlorine heptoxide) is the strongest acid among the three. This is because it can readily release two H+ ions when dissolved in water, leading to the formation of two HClO4 molecules.
- SO2 (sulfur dioxide) is the next strongest acid as it can release one H+ ion in an aqueous solution, forming H2SO3.
- P4O10 (tetra phosphorus decaoxide) is the weakest acid among the three. It reacts with water to form phosphoric acid (H3PO4) but releases fewer H+ ions compared to Cl2O7 and SO2.
Hence, the correct order of acidic strength is Cl2O7 > SO2 > P4O10.
Therefore, the correct answer is option D.
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Concepts Used:
Group 15 Elements
Group 15 elements are also known as nitrogen group elements or nitrogen family.
It consists of:
- Nitrogen (N)
- Phosphorus (P)
- Arsenic (As)
- Antimony (Sb)
- Bismuth (Bi)
- Moscovium (Mc)
They are present on the right side of the periodic table. All the elements are arranged based on their atomic weight. The elements with similar properties reside in a column called the group.
All Group 15 elements have the electron configuration ns2np3 in their outer shell, where n is the principal quantum number.
Periodic Trends in Group 15 Elements
