Which of the following oxides is amphoteric?

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Question

(A) The acidic or basic nature of transition metal oxides depends on the oxidation state of the metal.$(i)$ Oxides with lower oxidation states are gen

Vedclass · Accepted Answer

$Cr_2O_3$

Vedclass · Answer

(A) The acidic or basic nature of transition metal oxides depends on the oxidation state of the metal.$(i)$ Oxides with lower oxidation states are generally basic.(ii) Oxides with intermediate oxidation states are often amphoteric.(iii) Oxides with higher oxidation states are acidic.In $Cr_2O_3$,the oxidation state of $Cr$ is $+3$. $Cr_2O_3$ is a well-known amphoteric oxide,as it reacts with both acids and bases.

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