Which one of the following orders presents th | vedclass

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(A) The basic nature of oxides depends on the metallic character of the element. Metallic character increases down a group and decreases across a peri

Vedclass · Accepted Answer

$Al_2O_3 < MgO < Na_2O < K_2O$

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(A) The basic nature of oxides depends on the metallic character of the element. Metallic character increases down a group and decreases across a period from left to right. $Al$ is in period $3$,group $13$ (amphoteric oxide). $Mg$ is in period $3$,group $2$ (basic oxide). $Na$ is in period $3$,group $1$ (strongly basic oxide). $K$ is in period $4$,group $1$ (more strongly basic than $Na_2O$ due to larger size). Thus,the order of increasing basic nature is: $Al_2O_3 < MgO < Na_2O < K_2O$.

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

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