The most basic oxide among MnO, Mn2O3, MnO2 and Mn2O7 is
- MnO2
- MnO
- Mn2O7
- Mn2O3
The Correct Option is B
Solution and Explanation
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
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Concepts Used:
D and F Block Elements
The d-block elements are placed in groups 3-12 and F-block elements with 4f and 5f orbital filled progressively. The general electronic configuration of d block elements and f- block elements are (n-1) d 1-10 ns 1-2 and (n-2) f 1-14 (n-1) d1 ns2 respectively. They are commonly known as transition elements because they exhibit multiple oxidation states because of the d-d transition which is possible by the availability of vacant d orbitals in these elements.
They have variable Oxidation States as well as are good catalysts because they provide a large surface area for the absorption of reaction. They show variable oxidation states to form intermediate with reactants easily. They are mostly lanthanoids and show lanthanoid contraction. Since differentiating electrons enter in an anti-penultimate f subshell. Therefore, these elements are also called inner transition elements.
Read More: The d and f block elements