What is the correct assignment of common names for the following molecules? i.$\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}$

ii.$\quad$$\quad$$\quad$$\mathrm{CH}_{3}$
$\quad$$\quad$$\quad$$\quad$|
$\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CHCH}_{3}$

iii.$\mathrm{CH}_{3}$
$\quad$$\quad$|
$\mathrm{CH}_{3} \mathrm{CCH}_{3}$
$\quad$$\quad$|
$\quad$$\mathrm{CH}_{3}$
A) i = pentane; ii = isopentane; iii = neopentane
B) i = neopentane; ii = isopentane; iii = pentane
C) i = pentane; ii = neopentane; iii = isopentane
D) i = neopentane; ii = pentane; iii = isopentane

Question

What is the correct assignment of common names for the following molecules? i.$\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}$

ii.$\quad$$\quad$$\quad$$\mathrm{CH}_{3}$
$\quad$$\quad$$\quad$$\quad$|
$\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CHCH}_{3}$

iii.$\mathrm{CH}_{3}$
$\quad$$\quad$|
$\mathrm{CH}_{3} \mathrm{CCH}_{3}$
$\quad$$\quad$|
$\quad$$\mathrm{CH}_{3}$
A) i = pentane; ii = isopentane; iii = neopentane
B) i = neopentane; ii = isopentane; iii = pentane
C) i = pentane; ii = neopentane; iii = isopentane
D) i = neopentane; ii = pentane; iii = isopentane

Quizplus · Accepted Answer

i. $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}$ is a straight-chain alkane with five carbon atoms, named pentane. ii. $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CHCH}_{3}$ with a branching at the second carbon is commonly known as isopentane. iii. $\mathrm{CH}_{3} \mathrm{CCH}_{3}$ with all four methyl groups attached to a central carbon is known as neopentane.

What Is the Correct Assignment of Common Names for the Following