Which of the following skeletal structures correctly represents $\left({\mathrm{CH}}_3\right)2\mathrm{CH}\mathrm{CH}2\mathrm{CH}\mathrm{Cl}\mathrm{CH}3$?

For each of the following molecules, draw one 3-D representation at only the necessary atoms (that is, the ones with four different atoms/groups attached).

(c)

Give Lewis structures corresponding to the following line–angle structures. Give the molecular formula for each structure.

(c)

(d)

Given the skeletal structure of pentane, how many hydrogen atoms are present in the molecule?

Given a 3D representation of butane, which bond-line (skeletal) structure correctly represents the molecule?

Given the following Lewis structure for butane: ${\mathrm{CH}}_3$-${\mathrm{CH}}_2$-${\mathrm{CH}}_2$-${\mathrm{CH}}_3$, which of the following best represents its skeletal structure?

Which of the following best describes a skeletal structure in organic chemistry?

Which of the following best represents the skeletal structure of the major organic product formed from the reaction of $C_2{H}_5\mathrm{Br}$ (ethyl bromide) with sodium ethoxide in ethanol?

Which of the following best represents the correct skeletal structure for the linear form of $D$-glyceraldehyde?