Arrange the following atoms in the ascending order of atomic radius

Options

A. F,Cl,O,C
B. C,O,F,Cl
C. O,C,F,Cl
D. F,O,C,Cl

Explanation

To arrange the given atoms in ascending order of atomic radius, we need to consider their positions in the periodic table and the trends in atomic radius. Here’s a step-by-step solution:

### Step 1: Identify the Atoms
The atoms we need to arrange are:
- Carbon (C)
- Oxygen (O)
- Fluorine (F)
- Chlorine (Cl)

### Step 2: Determine the Periods and Groups
- Carbon (C) is in the 2nd period and 14th group.
- Oxygen (O) is in the 2nd period and 16th group.
- Fluorine (F) is in the 2nd period and 17th group.
- Chlorine (Cl) is in the 3rd period and 17th group.

### Step 3: Understand Atomic Radius Trends
1. **Across a Period**: Atomic radius decreases from left to right due to increasing nuclear charge, which pulls electrons closer to the nucleus.
2. **Down a Group**: Atomic radius increases as you move down a group because additional electron shells are added, increasing the distance between the nucleus and the outermost electrons.

### Step 4: Compare the Atoms
- **Fluorine (F)**: Smallest atomic radius in the 2nd period.
- **Oxygen (O)**: Larger than Fluorine but smaller than Carbon.
- **Carbon (C)**: Larger than both Fluorine and Oxygen.
- **Chlorine (Cl)**: In the 3rd period, it has a larger atomic radius than all the above due to having an additional electron shell.

### Step 5: Arrange in Ascending Order
Based on the above comparisons:
1. **Fluorine (F)** - Smallest
2. **Oxygen (O)**
3. **Carbon (C)**
4. **Chlorine (Cl)** - Largest

### Final Answer
The ascending order of atomic radius is:
**Fluorine (F) < Oxygen (O) < Carbon (C) < Chlorine (Cl)**