Question

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

ChemistryClassification of Elements and Periodicity in PropertiesJEE MainJEE Main 2011

Options:

A
$\mathrm{MgO} < \mathrm{K}_2 \mathrm{O} < \mathrm{Al}_2 \mathrm{O}_3 < \mathrm{Na}_2 \mathrm{O}$
B
$\mathrm{Na}_2 \mathrm{O} < \mathrm{K}_2 \mathrm{O} < \mathrm{MgO} < \mathrm{Al}_2 \mathrm{O}_3$
C
$\mathrm{K}_2 \mathrm{O} < \mathrm{Na}_2 \mathrm{O} < \mathrm{Al}_2 \mathrm{O}_3 < \mathrm{MgO}$
D
$\mathrm{Al}_2 \mathrm{O}_3 < \mathrm{MgO} < \mathrm{Na}_2 \mathrm{O} < \mathrm{K}_2 \mathrm{O}$