Chapter 23, Problem 67GQ

(a)

Interpretation Introduction

Interpretation:

The two geometrical isomers has to be drwan with molecular formula ${\text{C}}_{\text{2}}{\text{H}}_{\text{2}}{\text{Cl}}_{\text{2}}$.

Concept Introduction:

Alkenes are the hydrocarbons which have a genral molecular formula ${\text{C}}_{\text{n}}{\text{H}}_{\text{2n}}$. Alkenes are consist of double bond (one pi bond) due to which they are known as unsaturated hydrocarbons. Alkenes can show two type of isomerism,(1) Geometrical Isomerism (2) Structural Isomerism.

Geometrical Isomerism: This type of isomerism in case of alkenes is known as cis-trans isomerism. When two same group or have similar priority present opposite side of double bond then isomer is known as trans isomer, and if both are present same side of the double bond then isomer is called as cis isomer.

(b)

Interpretation Introduction

Interpretation:

The structural isomer has to be drwan with molecular formula ${\text{C}}_{\text{2}}{\text{H}}_{\text{2}}{\text{Cl}}_{\text{2}}$.

Concept Introduction:

Alkenes are the hydrocarbons which have a genral molecular formula ${\text{C}}_{\text{n}}{\text{H}}_{\text{2n}}$. Alkenes are consist of double bond (one pi bond) due to which they are known as unsaturated hydrocarbons. Alkenes can show two type of isomerism,(1) Geometrical Isomerism (2) Structural Isomerism.

Structural Isomerism: Structural Isomers are the structure of a molecule with same molecular formula but have different arrangements of bonds and atoms and position of double bond also changes from more substituted to less substituted or vice-versa.