Which of the following oxides is the least ac | vedclass

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(C) The acidity of oxides decreases down the group as the metallic character increases. Therefore,oxides of $As$ are less acidic than oxides of $P$.Fu

Vedclass · Accepted Answer

$As_4O_6$

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(C) The acidity of oxides decreases down the group as the metallic character increases. Therefore,oxides of $As$ are less acidic than oxides of $P$.Furthermore,for the same element,the acidity increases with an increase in the oxidation state of the central atom.Comparing the given oxides:$P_4O_{10}$ ($P$ in $+5$ state) is more acidic than $P_4O_6$ ($P$ in $+3$ state).$As_4O_{10}$ ($As$ in $+5$ state) is more acidic than $As_4O_6$ ($As$ in $+3$ state).Since $As$ is less electronegative than $P$,$As_4O_6$ is the least acidic among the given options.

Which of the following oxides is the least acidic?

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