The most basic oxide among MnO, Mn₂O₃, MnO₂ and Mn₂O₇ is :

• A. MnO
• B. MnO₂
• C. Mn₂O₃
• D. Mn₂O₇

The most basic oxide among the options provided is MnO. This is because it has a lower oxidation state of manganese, which typically results in more basic characteristics compared to the other oxides listed.

Understanding Oxides

Oxides can be classified based on their acidity or basicity:

• Basic Oxides: React with acids to form salts and water.
• Acidic Oxides: React with bases to form salts and water.

Why MnO is the Most Basic

MnO contains manganese in the +2 oxidation state, making it more basic. In contrast, MnO₂, Mn₂O₃, and Mn₂O₇ have higher oxidation states, leading to more acidic properties.

Summary

Therefore, the correct answer is A. MnO.