Comment over the following statement. Hydrocarbons may be both acyclic as well as cyclic

Answer

### Step-by-Step Solution:

1. **Understanding Hydrocarbons**: Hydrocarbons are organic compounds consisting entirely of hydrogen and carbon atoms. They are the basic building blocks of organic chemistry.

2. **Classification of Hydrocarbons**: Hydrocarbons can be classified into two main categories:
- **Acyclic Hydrocarbons**: These are open-chain hydrocarbons that do not form a ring structure. They can be further divided into:
- **Alkanes**: Saturated hydrocarbons with single bonds (e.g., ethane, CH₃-CH₃).
- **Alkenes**: Unsaturated hydrocarbons with at least one double bond (e.g., ethene, CH₂=CH₂).
- **Alkynes**: Unsaturated hydrocarbons with at least one triple bond (e.g., acetylene, CH≡CH).
- **Cyclic Hydrocarbons**: These are closed-chain hydrocarbons that form a ring structure. They can include:
- **Cycloalkanes**: Saturated cyclic hydrocarbons (e.g., cyclohexane).
- **Cycloalkenes**: Unsaturated cyclic hydrocarbons with at least one double bond (e.g., cyclobutene).
- **Cycloalkynes**: However, cycloalkynes do not exist due to the geometric constraints of triple bonds.

3. **Key Points about Cycloalkynes**: Cycloalkynes are not stable because the bond angles required for a triple bond (180 degrees) cannot be achieved in a cyclic structure, where the angles are typically less than 180 degrees.

4. **Examples**:
- **Cyclic Hydrocarbons**: Cyclohexane (C₆H₁₂) and benzene (C₆H₆) are common examples of cyclic hydrocarbons.
- **Acyclic Hydrocarbons**: Ethane (C₂H₆), ethene (C₂H₄), and acetylene (C₂H₂) are examples of acyclic hydrocarbons.

5. **Conclusion**: The statement that hydrocarbons may be both acyclic and cyclic is correct. Hydrocarbons can exist in both forms, each with distinct structural and chemical properties.