Among the isomeric alkanes of molecular formula `C_(5)H_(12)`, identify the one that on photochemical chlorination yields
(i) A single monochloride.
(ii) Three isomeric monochlorides.
(iii) Four isomeric monochlorides.

Explanation

To solve the problem of identifying isomeric alkanes of molecular formula C₅H₁₂ that yield different numbers of monochlorides upon photochemical chlorination, we will follow these steps:

### Step 1: Identify the isomeric structures of C₅H₁₂
The molecular formula C₅H₁₂ corresponds to five-carbon alkanes. The possible structural isomers are:
1. **n-Pentane**: CH₃-CH₂-CH₂-CH₂-CH₃
2. **Isopentane (2-methylbutane)**: CH₃-CH(CH₃)-CH₂-CH₃
3. **Neopentane (2,2-dimethylpropane)**: (CH₃)₄C
4. **Cyclopentane**: C₅H₁₂ (not applicable as it is not an alkane)
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