Alkenes - IUPAC Names and Isomers

The video tutorial covers the basics of alkenes, including their structure, bonding, and isomerism. It explains the IUPAC naming rules for alkenes, focusing on identifying the longest chain, numbering, and naming conventions. The tutorial also delves into the bonding characteristics of alkenes, highlighting the sigma and pi bonds, and the concept of SP2 hybridization. Additionally, it discusses the different types of isomerism in alkenes, such as structural and stereoisomerism, and the use of cis-trans and E-Z nomenclature.

What is the general formula for alkenes?

• C_nH_2n

• C_nH_2n+2

• C_nH_n

• C_nH_2n-2

In the IUPAC naming of alkenes, which group takes precedence when numbering the chain?

• Halogens

• Alkyl groups

• Double bond

• Hydroxyl groups

What type of hybridization is present in the carbon atoms of alkenes?

• sp

• sp3d

• sp2

• sp3

Which type of bond is shorter in alkenes, sigma or pi?

• Pi bond

• Neither, it depends on the molecule

• Sigma bond

• Both are equal

What is the main reason for restricted rotation around a double bond in alkenes?

• Presence of a sigma bond

• Presence of a pi bond

• Presence of a single bond

• Presence of a triple bond

What is the term for isomers that differ in the spatial arrangement of groups around a double bond?

• Geometrical isomers

• Conformational isomers

• Structural isomers

• Optical isomers

According to the Cahn-Ingold-Prelog priority rules, what is an E isomer?

• Low priority groups on opposite sides

• Low priority groups on the same side

• High priority groups on opposite sides

• High priority groups on the same side