Solveeit Logo
Login

Question

Question: Arrange the oxides of manganese according to increasing acidic strength....

Arrange the oxides of manganese according to increasing acidic strength.

A

MnO<Mn3O4<Mn2O3<MnO2<Mn2O7MnO < Mn_{3}O_{4} < Mn_{2}O_{3} < MnO_{2} < Mn_{2}O_{7}

B

Mn2O7<MnO2<Mn2O3<Mn3O4<MnOMn_{2}O_{7} < MnO_{2} < Mn_{2}O_{3} < Mn_{3}O_{4} < MnO

C

MnO2<Mn2O7<Mn3O4<Mn2O3<MnOMnO_{2} < Mn_{2}O_{7} < Mn_{3}O_{4} < Mn_{2}O_{3} < MnO

D

Mn3O4<Mn2O3<Mn2O7<MnO2<MnOMn_{3}O_{4} < Mn_{2}O_{3} < Mn_{2}O_{7} < MnO_{2} < MnO

Answer

MnO<Mn3O4<Mn2O3<MnO2<Mn2O7MnO < Mn_{3}O_{4} < Mn_{2}O_{3} < MnO_{2} < Mn_{2}O_{7}

Explanation

Solution

Acidic strength of oxides of transition metals increase with increase in oxidation number

MnO+2,Mn3O4+8/3,Mn2O3+3,MnO2+4,Mn2O7+7\overset{+ 2}{MnO},\overset{+ 8/3}{Mn_{3}O_{4}},\overset{+ 3}{Mn_{2}O_{3}},\overset{+ 4}{MnO_{2}},\overset{+ 7}{Mn_{2}O_{7}}

Hence acidic strength is of the order of

MnOBasic<Mn3O4<Mn2O3Amphoteric<MnO2<Mn2O7Acidic\underset{Basic}{MnO} < Mn_{3}O_{4} < \underset{Amphoteric}{Mn_{2}O_{3}} < MnO_{2} < \underset{Acidic}{Mn_{2}O_{7}}