Which oxide of manganese is most acidic in nature?

Options

A. MnO
B. `Mn_(2)O_(7)`
C. `Mn_(2)O_(3)`
D. `MnO_(2)`

Explanation

To determine which oxide of manganese is the most acidic in nature, we need to analyze the oxidation states of manganese in its various oxides. The acidic nature of an oxide generally increases with the oxidation state of the central metal. Here are the steps to find the answer:

### Step 1: Identify the Oxides of Manganese
The oxides of manganese we will consider are:
1. MnO
2. Mn2O7
3. Mn2O3
4. MnO2

### Step 2: Calculate the Oxidation State of Manganese in Each Oxide
Now, we will calculate the oxidation state of manganese (Mn) in each of these oxides.

1. **MnO**:
- The oxidation state of O is -2.
- Let the oxidation state of Mn be x.
- The equation is:
\[ x + (-2) = 0 \implies x = +2 \]

2. **Mn2O7**:
- The oxidation state of O is -2.
- Let the oxidation state of Mn be x.
- The equation is:
\[ 2x + 7(-2) = 0 \implies 2x - 14 = 0 \implies 2x = 14 \implies x = +7 \]

3. **Mn2O3**:
- The oxidation state of O is -2.
- Let the oxidation state of Mn be x.
- The equation is:
\[ 2x + 3(-2) = 0 \implies 2x - 6 = 0 \implies 2x = 6 \implies x = +3 \]

4. **MnO2**:
- The oxidation state of O is -2.
- Let the oxidation state of Mn be x.
- The equation is:
\[ x + 2(-2) = 0 \implies x - 4 = 0 \implies x = +4 \]

### Step 3: Compare the Oxidation States
Now, we summarize the oxidation states:
- MnO: +2
- Mn2O7: +7
- Mn2O3: +3
- MnO2: +4

### Step 4: Determine the Most Acidic Oxide
The oxide with the highest oxidation state of manganese is Mn2O7, which has an oxidation state of +7. According to the principle that higher oxidation states correlate with greater acidity, Mn2O7 will be the most acidic oxide of manganese.

### Final Answer
Thus, the oxide of manganese that is most acidic in nature is **Mn2O7**.

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