The basic character of MgO , BaO, and `Na_2O` and FeO follow the order

Options

A. `MgO lt FeO lt BaO lt Na_2O`
B. `FeO lt MgO lt Na_2O lt BaO`
C. `FeO lt MgO lt BaO lt Na_2O`
D. `Na_2O lt MgO lt FeO lt BaO`

Answer

To determine the order of basic character for the oxides MgO, BaO, Na2O, and FeO, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Basic Character**: Basic character refers to the ability of an oxide to react with acids and form salts and water. Generally, basic character increases down a group in the periodic table and decreases across a period from left to right.

2. **Identify the Group and Period**:
- **Na2O** (Sodium Oxide) comes from Group 1 (alkali metals).
- **BaO** (Barium Oxide) comes from Group 2 (alkaline earth metals).
- **MgO** (Magnesium Oxide) also comes from Group 2.
- **FeO** (Iron(II) Oxide) comes from the transition metals.

3. **Analyze Trends**:
- **From Left to Right**: Basic character decreases. For example, Na2O (from Group 1) is more basic than MgO (from Group 2).
- **From Top to Bottom**: Basic character increases. Barium (Ba) is below Magnesium (Mg) in Group 2, so BaO is more basic than MgO.

4. **Rank the Oxides**:
- **Na2O**: Highest basic character due to being from Group 1.
- **BaO**: Next, as it is from Group 2 and below Mg.
- **FeO**: Lower than BaO due to being a transition metal oxide.
- **MgO**: Lowest basic character among these oxides.

5. **Final Order**: Based on the analysis, the order of basic character is:
- **Na2O > BaO > FeO > MgO**

### Conclusion:
The correct order of basic character for the oxides is:
**Na2O > BaO > FeO > MgO**