Which of the following properties increases on going down from F to I in Group VII-A of the periodic table

Options

A. Electronegativity
B. volatile nature
C. ionic radius
D. oxidizing power

Explanation

To determine which property increases as we move down from fluorine (F) to iodine (I) in Group VII-A (the halogens) of the periodic table, we can analyze the properties of the halogens systematically.

### Step-by-Step Solution:

1. **Identify the Halogens**: The halogens in Group VII-A include fluorine (F), chlorine (Cl), bromine (Br), and iodine (I). Their atomic numbers are:
- Fluorine (F) - Atomic Number 9
- Chlorine (Cl) - Atomic Number 17
- Bromine (Br) - Atomic Number 35
- Iodine (I) - Atomic Number 53

2. **Examine Atomic Weights**: The atomic weights of these halogens are:
- Fluorine (F) - 18
- Chlorine (Cl) - 35.5
- Bromine (Br) - 80
- Iodine (I) - 127

3. **List the Properties to Analyze**: The properties we need to consider are:
- Electronegativity
- Volatile nature
- Ionic radius
- Oxidizing power

4. **Analyze Each Property**:
- **Electronegativity**: Electronegativity decreases as we move down the group. (Fluorine is the most electronegative element.)
- **Volatile Nature**: Volatility decreases down the group. (Fluorine is more volatile than iodine.)
- **Ionic Radius**: The ionic radius increases down the group. (As we add more electron shells, the size of the ions increases.)
- **Oxidizing Power**: The oxidizing power decreases down the group. (Fluorine is a stronger oxidizing agent than iodine.)

5. **Conclusion**: From the analysis, the only property that increases as we move from fluorine to iodine is the **ionic radius**.

### Final Answer:
The property that increases on going down from F to I in Group VII-A of the periodic table is the **ionic radius**.

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