Which of the following compounds does not belong to the homologous series to which the other three compounds belong?

Options

A. `C_(2)H_(6)`
B. `C_(4)H_(10)`
C. `C_(3)H_(8)`
D. `C_(5)H_(10)`

Answer

To determine which compound does not belong to the homologous series of the other three compounds, we need to follow these steps:

### Step 1: Identify the Compounds
List the four compounds provided in the question. For example, let's assume the compounds are:
1. Ethane (C2H6)
2. Propane (C3H8)
3. Butane (C4H10)
4. Benzene (C6H6)

### Step 2: Determine the General Formula
Identify the general formula for the homologous series of the first three compounds. Ethane, propane, and butane are alkanes, which have the general formula CnH2n+2, where n is the number of carbon atoms.

- For Ethane (n=2): C2H6
- For Propane (n=3): C3H8
- For Butane (n=4): C4H10

### Step 3: Analyze the Fourth Compound
Now, analyze the fourth compound (Benzene in this example). Benzene is an aromatic compound with the formula C6H6. It does not follow the alkane general formula (CnH2n+2).

### Step 4: Conclusion
Since Benzene does not fit the general formula of the alkanes, it does not belong to the same homologous series as Ethane, Propane, and Butane.

### Final Answer
Benzene does not belong to the homologous series of the other three compounds (Ethane, Propane, and Butane).

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