Which of the following is amphoteric oxide : Mn_(2)O_(7),Cr_(2)O_(3), – InterviewSolution

1.	Which of the following is amphoteric oxide : Mn_(2)O_(7),Cr_(2)O_(3),CrO,V_2O_5,V_2O_4
Answer» `V_2O_5,Cr_2O_3` `Mn_2O_7,CrO_3` `CrO,V_2O_5` `V_2O_5,V_2O_4` Solution :OXIDES in the lower OXIDATION state are basic `(i.e. CrO, V_2,O_2)`, those in higher oxidation state `(e.g. Mn_2O_7, CrO_3)` are ACIDIC and in the intermediate state `(e.g., Cr_2,O_3, V_2O_5)` are amphotertic.

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