3 public questions tagged with this topic.
Chain isomerism involves different carbon skeletons. CH₃CH(CH₃)CH₃ (2-methylpropane) has the same molecular formula (C₄H₁₀) as n-butane but a branched structure.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Isomerism - Structural Isomerism - Chain Position Functional Metamerism
CH₃CH₂CH₂CH=CH₂ (pent-1-ene) has no geometrical isomerism. CH₃C(CH₃)=CHCH₃ (2-methylbut-2-ene) is a chain isomer, also lacking geometrical isomerism due to identical substituents.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Isomerism - Structural Isomerism - Chain Position Functional Metamerism
CH₃CH₂CH=CHCH₃ (pent-2-ene) shows geometrical isomerism (cis/trans) due to different substituents on the double bond. It has no chain isomerism with itself, as it’s the same structure.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Isomerism - Stereoisomerism - Geometrical and Optical Isomerism
