Succinaldehyde on reaction with `P_(2)O_(5)` produces organic compound x, x is having number c `pi` electrons

Explanation

To solve the problem, we need to analyze the reaction of succinaldehyde with phosphorus pentoxide (P2O5) and determine the structure of the resulting compound X, as well as the number of π (pi) electrons it contains.

### Step-by-Step Solution:

1. **Identify the Structure of Succinaldehyde**:
- Succinaldehyde is a dicarboxaldehyde with the formula \( \text{C}_4\text{H}_6\text{O}_2 \). Its structure can be represented as:
\[ \text{O} \, || \, \text{C} - \text{C} - \text{C} - \text{C} \, || \, \text{O} \]
- The structure has two aldehyde groups at both ends of a four-carbon chain.

2. **Reaction with P2O5**:
- P2O5 is a dehydrating agent, which means it will remove water (H2O) from the reactants. In the case of succinaldehyde, the reaction will lead to the formation of an enol or an alkene.
- The dehydration reaction can be represented as:
\[ \text{C}_4\text{H}_6\text{O}_2 \xrightarrow{\text{P}_2\text{O}_5} \text{C}_4\text{H}_6\text{O} + \text{H}_2\text{O} \]

3. **Formation of Compound X**:
- After dehydration, the compound X formed is likely to be an enol or an alkene. In this case, we can deduce that the compound X is likely to be 2-butenal (crotonaldehyde), which has the structure:
\[ \text{CH}_3 - \text{CH} = \text{CH} - \text{CHO} \]

4. **Determine the Number of π Electrons**:
- In the structure of 2-butenal, we need to identify the π bonds:
- There is one double bond between the second and third carbon atoms (C=C), contributing 2 π electrons.
- The carbonyl group (C=O) also contributes 2 π electrons.
- Therefore, the total number of π electrons in compound X (2-butenal) is:
\[ 2 \, (\text{from C=C}) + 2 \, (\text{from C=O}) = 4 \, \text{π electrons} \]

### Final Answer:
The organic compound X formed from the reaction of succinaldehyde with P2O5 has **4 π electrons**.

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