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Question

The order in which the following oxides are arranged according to decreasing basic nature is:

A
Na2O>MgO>Al2O3>SiO2
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B
SiO2>Al2O3>MgO>Na2O
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C
Al2O3>SiO2>MgO>Na2O
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D
SiO2>MgO>Na2O>Al2O3
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Solution

The correct option is A Na2O>MgO>Al2O3>SiO2
As we know, along a period acidic nature of oxide increases. Hence, the basic character decreases.

Na2O>MgO>Al2O3>SiO2

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