[Al2O_3 < Mgo < Na_2O < K...] Which one of the following orders represents the correct sequence of increasing basic nature of the

For Competitive Exams

Which one of the following orders represents the correct sequence of increasing basic nature of the given oxides?

$Al2O_3 < Mgo < Na_2O < K_2O$

$MgO < K_20 < Al_2O_3 < Na_2O$

$Na_2O < K_2O < MgO < Al_2O_3$

$K_2O < Na_2O < Al_2O_3 < Mgo$

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