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Question

Chemistry Question on d -and f -Block Elements

Amphoteric oxides of Mn and Cr are

A

MnOMnO and CrOCrO

B

Mn2O3Mn_2O_3 and Cr2O3Cr_2O_3

C

MnO2MnO_2 and Cr2O3Cr_2O_3

D

Mn2O7Mn_2O_7 and CrO3CrO_3

Answer

MnO2MnO_2 and Cr2O3Cr_2O_3

Explanation

Solution

MnO2MnO_2 and Cr2O3Cr_2O_3 are amphoteric. MnOMnO is basic. Mn2O3Mn_2O_3 is weakly basic. Mn2O7Mn_2O_7 is strongly acidic. CrOCrO is basic while CrO3CrO_3 is acidic.