The decreasing order of basic character of K_(2)O BaO , CaO and MgO is

1.	The decreasing order of basic character of K_(2)O BaO , CaO and MgO is
Answer» `K_(2)O gt BaO gt CaO gt MGO` `K_(2)O gt CaO gt BaO gt MgO` `MgO gt BaO gt CaO gt K_(2)O` `MgO gt CaO gt BaO gt K_(2)O` Solution :Alkali metal oxides are more BASIC than their corresponding alkaline EARTH metal oxides . Thus , `K_(2)O` is the most basic . Further , basic character of alkaline earth metal oxides increases down the GROUP as the electropositive character of the metal increases , i.e., `BaO gt CaO gt MgO`. Combining the two trends , basic character increases in the order : `K_(2)O gt BaO gt CaO gt MgO` , i.e., option (a) is correct .

Discussion