Q.
Which of the following oxides of manganese is amphoteric?
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a
MnO2
b
Mn2O3
c
Mn2O7
d
MnO
answer is A.
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Detailed Solution
Acidic character of oxides increases when O.S. increases. Thus MnO and Mn2O3, are basic. MnO2 is amphoteric and Mn2O7 is acidic.
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