Catenation i.e., linking of similar atoms depends on size and electronic configuration of atoms. The tendency of catenation in group 14 elements follows the order.

Options

A. `C gt Si gt Ge gt Sn`
B. `C gt gt Si gt Ge = Sn`
C. `Si gt C gt Sn gt Ge`
D. `Ge gt Sn gt Si gt C`

Explanation

To determine the order of catenation in group 14 elements, we need to analyze the factors affecting catenation, which is the ability of an element to form chains or rings by bonding with itself.

### Step-by-Step Solution:

1. **Understanding Catenation**:
- Catenation refers to the ability of an element to form long chains or structures by bonding with itself. This property is particularly significant in group 14 elements.

2. **Identifying Group 14 Elements**:
- The group 14 elements include Carbon (C), Silicon (Si), Germanium (Ge), Tin (Sn), and Lead (Pb). However, for this question, we will focus on the first three: Carbon, Silicon, and Germanium.

3. **Analyzing Atomic Size**:
- As we move down the group from Carbon to Silicon to Germanium, the atomic size increases. This is due to the addition of electron shells as we go down the group.

4. **Effect of Atomic Size on Bond Length**:
- With the increase in atomic size, the bond length between the atoms also increases. Longer bond lengths generally lead to weaker bonds.

5. **Bond Strength and Catenation**:
- The strength of the bond between similar atoms is crucial for catenation. As the bond length increases (due to larger atomic size), the bond strength decreases. Weaker bonds are less stable and less likely to form long chains.

6. **Conclusion on Catenation Tendency**:
- Therefore, the tendency for catenation decreases as we move down the group from Carbon to Silicon to Germanium. The order of catenation tendency in group 14 elements is:
- Carbon > Silicon > Germanium

7. **Final Order**:
- The correct order of catenation in group 14 elements is:
- Carbon (C) > Silicon (Si) > Germanium (Ge)

### Answer:
The tendency of catenation in group 14 elements follows the order: **C > Si > Ge**.

---