Chemical BondingHard

Question

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

Options

A.MgO < K2O < Al2O3 < Na2O
B.Na2O < K2O < MgO < Al2O3
C.K2O < Na2O < Al2O3 < MgO
D.Al2O3 < MgO < Na2O < K2O

Solution

Across a period metallic strength decreases & down the group it increases

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