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 analyze the properties of these metal oxides based on their positions in the periodic table and their metallic character.

### Step-by-Step Solution:

1. **Identify the Oxides and Their Metals**:
- The oxides in question are:
- MgO (Magnesium Oxide)
- BaO (Barium Oxide)
- Na2O (Sodium Oxide)
- FeO (Iron Oxide)

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

3. **Analyze the Position in the Periodic Table**:
- Sodium (Na) is in Group 1 (alkali metals).
- Magnesium (Mg) is in Group 2 (alkaline earth metals).
- Barium (Ba) is also in Group 2 but below Magnesium.
- Iron (Fe) is a transition metal located in the d-block.

4. **Trends in Basic Character**:
- As we move down a group (from Mg to Ba), the basic character increases because the metallic character increases, leading to a greater tendency to lose electrons.
- Sodium oxide (Na2O) is highly basic due to the strong basic nature of alkali metals.
- Iron oxide (FeO) is less basic compared to the alkaline and alkaline earth metal oxides because iron is a transition metal and has a lower tendency to lose electrons compared to alkali and alkaline earth metals.

5. **Order of Basic Character**:
- From the analysis, we can establish the following order of basic character:
- Na2O > BaO > MgO > FeO
- Thus, the order of basic character for the given oxides is:
- **Na2O > BaO > MgO > FeO**

### Final Answer:
The basic character of MgO, BaO, Na2O, and FeO follows the order: **Na2O > BaO > MgO > FeO**.