Which of the molecules listed below has the correct name?

(i) 1-bromo-2,3-dimethylpent-2-ene

(ii) 4-methylpent-4-ene-2-yne

How many of the following systematic names are correct? Correct those that are misnamed.
(i) 3-ethylcyclohexanol
(ii) 1,1-dimethyl-3-cyclopentanol

Draw all constitutional isomers with a molecular formula C₄H₆O that are open-chain alcohols excluding enols.

Draw all possible constitutional isomers for the following molecular formula of an alcohol:
C₅H₁₂O (open-chain compounds only)
Write IUPAC names for each of the isomers.

Write the IUPAC name and indicate if the amine is primary, secondary, or tertiary:

Determine the systematic and common names for the molecule given below, and specify if it is primary, secondary, or tertiary.

Illustrate the condensed and skeletal structure of the amine given below.

N,N-diisopropylhexan-3-amine

The figure below represents a substituted cycloalkane:

Specify whether it is cis or trans.

Looking at the geometry of the given compounds, determine each as E, Z,or neither.

Looking at the substituents around the double bond in each of the given structures, decide whether they can show geometric isomerism or not. For the ones that can, draw the structures of the isomers with their names using E-Z nomenclature.

a. 1-Chlorobuta-1,3-diene
b. 3-Chloropent-2-ene

Write a perspective representation that corresponds to the lowest-energy conformation (or the most stable conformation) of the following compound.
2-methylhexane

Compared to butane and other alkanes, there is no free rotation around any C-C bonds in cyclobutane. Provide a brief explanation.

Consider the following pairs of conformations.

Identify which conformation has the lowest strain energy.