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Which one represents the correct sequence of the increasing basic nature of the given oxides? 1) K2O < Na2O < Al2O3 < MgO 2) Al2O3 < MgO < Na2O < K2O 3) MgO < K2O < Al2O3 < Na2O 4) MgO < K2O < Na2O < Al2O3

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 Al2O3 < MgO < Na2O < K2O represents the correct order  

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Sumit Saini

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