Among the following, the one which is the most basic is

Options

A. ZnO
B. MgO
C. `Al_(2)O_(3)`
D. `N_(2)O_(5)`

Explanation

To determine which of the given oxides is the most basic among Zinc Oxide (ZnO), Magnesium Oxide (MgO), Aluminium Oxide (Al2O3), and Nitrogen Pentoxide (N2O5), we can analyze the nature of each oxide step by step.

### Step 1: Analyze Zinc Oxide (ZnO)
- **Nature**: Zinc oxide is classified as amphoteric. This means it can react with both acids and bases to form salts.
- **Conclusion**: It is neither strongly acidic nor strongly basic.

### Step 2: Analyze Magnesium Oxide (MgO)
- **Nature**: Magnesium oxide is the oxide of an alkaline earth metal (magnesium).
- **Basicity**: Alkaline earth metal oxides are generally known to be highly basic.
- **Conclusion**: MgO is a strong base.

### Step 3: Analyze Aluminium Oxide (Al2O3)
- **Nature**: Aluminium oxide is also amphoteric. It can react with both acids and bases, similar to zinc oxide.
- **Conclusion**: It is neither strongly acidic nor strongly basic.

### Step 4: Analyze Nitrogen Pentoxide (N2O5)
- **Nature**: Nitrogen pentoxide is an oxide of a non-metal (nitrogen).
- **Acidity**: Non-metal oxides, especially those with higher oxidation states, tend to be acidic. N2O5 is known to be acidic.
- **Conclusion**: It is not basic.

### Final Conclusion
After analyzing all four compounds:
- Zinc Oxide (ZnO) - Amphoteric
- Magnesium Oxide (MgO) - Basic
- Aluminium Oxide (Al2O3) - Amphoteric
- Nitrogen Pentoxide (N2O5) - Acidic

The most basic oxide among the given options is **Magnesium Oxide (MgO)**.

### Answer
**Magnesium Oxide (MgO)** is the most basic oxide among the options provided.

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