Correct order of basic nature is :-A MgO < K2O < Al2O3 < Na2O B Na2O < K2O < MgO < Al2O3 C Al2O3 < MgO < Na2O < K2O D K2O < Na2O < Al2O3 < MgO
Question
Correct order of basic nature is :-
- A)
MgO < K2O < Al2O3 < Na2O - B)
Na2O < K2O < MgO < Al2O3 - C)
Al2O3 < MgO < Na2O < K2O - D)
K2O < Na2O < Al2O3 < MgO
Solution
The correct order of basic nature is: Al2O3 < MgO < Na2O < K2O. So, the correct option is C.
Here's why:
The basic nature of oxides increases down the group in the periodic table. This is because the metallic character of elements increases down the group. Since Al is above Mg in the same group (Group 2), Al2O3 is less basic than MgO.
Similarly, Mg is above Na in the same group (Group 1), so MgO is less basic than Na2O.
Finally, Na is above K in the same group, so Na2O is less basic than K2O.
Therefore, the correct order is Al2O3 < MgO < Na2O < K2O.
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