In the following questions, a statement of assertion (A) is followed by a statement of reason (R )
A : `CO_(2) ` is resonance stabilized molecule.
R : Bond length of C-O I `CO_(2)` is intemediate of single and double bond length.

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 assertion (A) and reason (R) provided in the question, we can break down the solution into the following steps:

### Step 1: Understand the Assertion
The assertion states that CO₂ is a resonance-stabilized molecule. This means that the actual structure of CO₂ is a hybrid of multiple resonance forms, which contributes to its stability.

**Hint:** Recall that resonance occurs when a molecule can be represented by two or more valid Lewis structures.

### Step 2: Draw the Lewis Structure of CO₂
The Lewis structure of CO₂ shows that carbon (C) is double-bonded to each oxygen (O) atom. The structure can be represented as:
```
O=C=O
```
Each oxygen has two lone pairs of electrons.

**Hint:** Remember that in CO₂, carbon is the central atom, and it forms double bonds with both oxygen atoms.

### Step 3: Identify Resonance Forms
In CO₂, the double bonds can shift, leading to different resonance structures. For example:
1. One resonance form can have a double bond between C and one O, and a single bond with a positive charge on C and a negative charge on the other O.
2. Another resonance form can have the double bond shift to the other O, resulting in a similar charge distribution.

**Hint:** Think about how the movement of electrons can create different valid structures for the same molecule.

### Step 4: Evaluate the Reason
The reason states that the bond length of C-O in CO₂ is intermediate between single and double bond lengths. This is incorrect because the bond in CO₂ is primarily a double bond, and the bond lengths are not intermediate between single and double bonds.

**Hint:** Recall the typical bond lengths for single, double, and triple bonds. A double bond is shorter than a single bond, not intermediate.

### Step 5: Conclusion
- The assertion (A) is true because CO₂ is resonance-stabilized.
- The reason (R) is false because the bond length in CO₂ is not intermediate between single and double bond lengths; it is closer to that of a double bond.

Thus, the correct conclusion is that the assertion is true, but the reason is false.

**Final Answer:** Assertion (A) is true, and Reason (R) is false.