The increasing order of basic character of oxides Mgo, SrO, K2O and Cs2O is? Give reasons -
Alkali metal oxides are most basic followed by alkaline earth metal oxides while transition metal oxides are least basic . Amongst alkali and alkaline earth metal oxides , basicity increases down the group. Thus, Cs2O is more basic than K2O and SrO is more basic than MgO
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but what are the reasons which increase the basicity down the group.