Thank you for reporting, we will resolve it shortly
Q.
Arrange the oxides of manganese according to increasing acidic strength.
The d-and f-Block Elements
Solution:
Acidic strength of oxides of transition metals increases with increase in oxidation number.
Hence acidic strength is of the order of
$\underset{\text { Basic }}{ MnO }< Mn _{3} O _{4}<\underset{\text { Amphoteric }}{ Mn _{2} O _{3}}< MnO _{2}<\underset{\text { Acidic }}{ Mn _{2} O _{7}}$
