Which of the following statement(s) is/are true for the alkyl halide?

Options

A. Alkyl halides are formed by the replacement of hydrogen atom In hydrocarbon by alkyl halide
B. Aryl halide fs also called haloalkane
C. Haloarene Is attached to `sp^3` hybridised carbon atom
D. None of the haloalkane are found In nature

Answer

To determine which statements are true for alkyl halides, we need to analyze each statement based on our understanding of alkyl halides (also known as haloalkanes). Here’s a step-by-step solution:

### Step 1: Understand Alkyl Halides
Alkyl halides are compounds where one or more hydrogen atoms in an alkane are replaced by halogen atoms (X), which can be fluorine (F), chlorine (Cl), bromine (Br), or iodine (I). For example, if we take ethane (C2H6) and replace one hydrogen with a halogen, we get an alkyl halide.

### Step 2: Analyze Each Statement
Now, let’s evaluate the given statements one by one:

1. **Statement 1**: Alkyl halides are formed by the replacement of a hydrogen atom in hydrocarbons by a halogen atom.
- **Analysis**: This statement is true. Alkyl halides are indeed formed by substituting a hydrogen atom in an alkane with a halogen.

2. **Statement 2**: Aryl halides are also called haloalkanes.
- **Analysis**: This statement is false. Aryl halides are actually different from alkyl halides; they are compounds where a halogen is bonded to an aromatic ring, not an alkane.

3. **Statement 3**: Haloalkanes are attached to sp3 hybridized carbon atoms.
- **Analysis**: This statement is false. Alkyl halides (haloalkanes) are attached to sp3 hybridized carbon atoms, but the term "haloalkanes" is often confused with "aryl halides," which are attached to sp2 hybridized carbon atoms.

4. **Statement 4**: None of the haloalkanes are found in nature.
- **Analysis**: This statement is false. Many haloalkanes are found in nature, such as certain naturally occurring halogenated compounds.

### Conclusion
Based on our analysis:
- **True Statement**: Statement 1
- **False Statements**: Statements 2, 3, and 4

### Final Answer
The only true statement regarding alkyl halides is:
- **Option 1**: Alkyl halides are formed by the replacement of a hydrogen atom in hydrocarbons by a halogen atom.

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