Arrange the following in the increasing order of their
`NaCl, MgCl_(2), SiCl_(4), AlCl_(3)("ionic character")`

Answer

To arrange the compounds NaCl, MgCl₂, SiCl₄, and AlCl₃ in increasing order of their ionic character, we need to analyze the electronegativity differences between the constituting atoms in each compound. Here’s a step-by-step breakdown of the solution:

### Step 1: Identify the Compounds and Their Constituting Atoms
- **NaCl**: Sodium (Na) and Chlorine (Cl)
- **MgCl₂**: Magnesium (Mg) and Chlorine (Cl)
- **SiCl₄**: Silicon (Si) and Chlorine (Cl)
- **AlCl₃**: Aluminum (Al) and Chlorine (Cl)

### Step 2: Understand Ionic Character
Ionic character in a compound is determined by the difference in electronegativity between the two atoms. The greater the difference, the more ionic the character of the compound.

### Step 3: Determine Electronegativity Values
Using the Pauling scale:
- **Na**: 0.93
- **Mg**: 1.31
- **Si**: 1.90
- **Al**: 1.61
- **Cl**: 3.16

### Step 4: Calculate Electronegativity Differences
Now, we calculate the electronegativity differences for each compound:
- **NaCl**: |0.93 - 3.16| = 2.23
- **MgCl₂**: |1.31 - 3.16| = 1.85
- **SiCl₄**: |1.90 - 3.16| = 1.26
- **AlCl₃**: |1.61 - 3.16| = 1.55

### Step 5: Compare the Differences
Now we can rank the compounds based on their electronegativity differences:
1. **SiCl₄**: 1.26
2. **AlCl₃**: 1.55
3. **MgCl₂**: 1.85
4. **NaCl**: 2.23

### Step 6: Arrange in Increasing Order of Ionic Character
Since a greater electronegativity difference corresponds to a higher ionic character, we can arrange the compounds in increasing order of ionic character:
- **SiCl₄** < **AlCl₃** < **MgCl₂** < **NaCl**

### Final Answer
The increasing order of ionic character is:
**SiCl₄ < AlCl₃ < MgCl₂ < NaCl**

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