Question
Chemistry Question on d -and f -Block Elements
The most basic oxide among MnO, Mn2O3, MnO2 and Mn2O7 is
A
MnO2
B
MnO
C
Mn2O7
D
Mn2O3
Answer
MnO
Explanation
Solution
The correct answer is option (B): MnO
The most basic among the given oxide is MnO (Maangnanese (II) Oxide). Basicity is the ease with which the oxide can accept a proton and form hydroxide. The more basic the oxide is more it has the tendency to form hydroxide. In MnO, Mn is in +2 oxidation state, therefore it can readily react with water to form Mn(OH)2 after accepting 2 protons. Therefore, the answer is MnO