A : Carbon has maximum tendency of catenation among group 14 .
R : C- C bond strength is very strong .

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion , then mark (1)
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion , then mark (2)
C. If Assertion is true statement but Reason is false , then mark (3)
D. If both Assertion and Reason are false statements , then mark (4)

Answer

To analyze the given statements regarding carbon's catenation tendency and the strength of the C-C bond, we can break down the solution into the following steps:

### Step 1: Understand Catenation
Catenation is defined as the ability of an element to form covalent bonds with itself, resulting in the formation of chains, rings, or cage structures.

**Hint:** Remember that catenation involves the self-bonding of an element.

### Step 2: Identify Group 14 Elements
Group 14 elements include Carbon (C), Silicon (Si), Germanium (Ge), Tin (Sn), and Lead (Pb). Among these, we need to focus on carbon's unique properties.

**Hint:** List the elements of Group 14 to visualize the comparison.

### Step 3: Analyze Carbon's Catenation Tendency
Carbon has the highest tendency for catenation in Group 14. This is due to several factors:
- Carbon has a small atomic size, which allows for effective overlap of its orbitals.
- Carbon has four valence electrons, enabling it to form four covalent bonds (tetravalency).

**Hint:** Consider how atomic size and valency contribute to an element's bonding capabilities.

### Step 4: Discuss C-C Bond Strength
The strength of the C-C bond is significant because it results from the effective overlapping of 2p orbitals. This strong bond energy contributes to the stability of carbon chains and structures.

**Hint:** Think about how orbital overlap affects bond strength.

### Step 5: Compare with Other Group 14 Elements
As we move down the group from carbon to lead, the atomic size increases, leading to less effective orbital overlap (e.g., 3p-3p in silicon). This results in a decreased tendency for catenation in heavier elements.

**Hint:** Reflect on how increasing atomic size impacts bonding and catenation.

### Step 6: Conclusion
Both the assertion (A) that carbon has the maximum tendency for catenation among Group 14 elements and the reason (R) that the C-C bond strength is very strong are true. The reason provided effectively explains the assertion.

**Hint:** Ensure you can justify both statements with the concepts discussed.

### Final Answer
Both the assertion and reason are true, and the reason is the correct explanation for the assertion.