IUPAC naming practice for alkanes with structural formulas.

To solve the problem of giving the IUPAC names for the given hydrocarbons, we need to follow the rules of IUPAC nomenclature. Here's a step-by-step explanation for each compound:

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a)


- Analysis: This is a branched alkane.
- The longest carbon chain has 5 carbons: pentane.
- There are two methyl groups (–CH₃) on the second and third carbons.
- IUPAC Name: 2,3-Dimethylpentane

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b)


- Analysis: This is a branched alkane.
- The longest carbon chain has 4 carbons: butane.
- There are two methyl groups (–CH₃) on the second carbon.
- IUPAC Name: 2,2-Dimethylbutane

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c)


- Analysis: This is a branched alkane.
- The longest carbon chain has 7 carbons: heptane.
- There are two methyl groups (–CH₃) on the third and fifth carbons.
- IUPAC Name: 3,5-Dimethylheptane

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d)


- Analysis: This is a branched alkane.
- The longest carbon chain has 5 carbons: pentane.
- There are two ethyl groups (–CH₂CH₃) on the second and fourth carbons.
- IUPAC Name: 2,4-Diethylpentane

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e)


- Analysis: This is an alkane with a chlorine substituent.
- The longest carbon chain has 4 carbons: butane.
- There is a chlorine atom (Cl) on the second carbon.
- IUPAC Name: 2-Chlorobutane

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f)


- Analysis: This is a branched alkane.
- The longest carbon chain has 5 carbons: pentane.
- There are three methyl groups (–CH₃) on the second and third carbons.
- IUPAC Name: 2,2,3-Trimethylpentane

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g)


- Analysis: This is a branched alkane with a bromine substituent.
- The longest carbon chain has 6 carbons: hexane.
- There are two methyl groups (–CH₃) on the second carbon.
- There is a bromine atom (Br) on the third carbon.
- IUPAC Name: 3-Bromo-2,2-dimethylhexane

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h)


- Analysis: This is a branched alkane with a fluorine substituent.
- The structure is already given in condensed form: CH₃CH₂C(CH₃)₂CH₂CH(F)CH(CH₂CH₃)CH₃.
- The longest carbon chain has 7 carbons: heptane.
- There are two methyl groups (–CH₃) on the third carbon.
- There is a fluorine atom (F) on the fifth carbon.
- There is an ethyl group (–CH₂CH₃) on the sixth carbon.
- IUPAC Name: 3,3-Dimethyl-5-fluoro-6-ethylheptane

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i)


- Analysis: This is a cycloalkane with a side chain.
- The ring has 6 carbons: cyclohexane.
- There is a methyl group (–CH₃) on the ring.
- IUPAC Name: Methylcyclohexane

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j)


- Analysis: This is a bridged cycloalkane.
- The structure has a 5-membered ring with two methyl groups (–CH₃) on the ring.
- IUPAC Name: 2,2-Dimethylbicyclo[2.1.0]pentane

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Final Answers:

1. a) 2,3-Dimethylpentane
2. b) 2,2-Dimethylbutane
3. c) 3,5-Dimethylheptane
4. d) 2,4-Diethylpentane
5. e) 2-Chlorobutane
6. f) 2,2,3-Trimethylpentane
7. g) 3-Bromo-2,2-dimethylhexane
8. h) 3,3-Dimethyl-5-fluoro-6-ethylheptane
9. i) Methylcyclohexane
10. j) 2,2-Dimethylbicyclo[2.1.0]pentane

Boxed Final Answer:
\[
\boxed{
\begin{array}{ll}
\text{a)} & \text{2,3-Dimethylpentane} \\
\text{b)} & \text{2,2-Dimethylbutane} \\
\text{c)} & \text{3,5-Dimethylheptane} \\
\text{d)} & \text{2,4-Diethylpentane} \\
\text{e)} & \text{2-Chlorobutane} \\
\text{f)} & \text{2,2,3-Trimethylpentane} \\
\text{g)} & \text{3-Bromo-2,2-dimethylhexane} \\
\text{h)} & \text{3,3-Dimethyl-5-fluoro-6-ethylheptane} \\
\text{i)} & \text{Methylcyclohexane} \\
\text{j)} & \text{2,2-Dimethylbicyclo[2.1.0]pentane}
\end{array}
}
\]