The increasing order of densities of the following alkyl halides is 1. $n-\mathrm{C}_3 \mathrm{H}_7…
The increasing order of densities of the following alkyl halides is
1. $n-\mathrm{C}_3 \mathrm{H}_7 \mathrm{Br}$
II. $n-\mathrm{C}_3 \mathrm{H}_7 \mathrm{Cl}$
m. $n-\mathrm{C}_3 \mathrm{H}_7 \mathrm{I}$
(II) $ < $ (I) $ < $ (III)
(III) $ < $ (l) $ < $ (II)
(l) $ < $ (II) $ < $ (III)
(III) $ < $ (II) $ < $ (l)
Solution
Density of
$
\begin{array}{r}
\mathrm{C}_3 \mathrm{H}_7 \mathrm{Cl} \longrightarrow 0.89, \mathrm{C}_3 \mathrm{H}_7 \mathrm{Br} \longrightarrow 1.335, \\
\mathrm{C}_3 \mathrm{H}_7 \mathrm{I} \longrightarrow 1.747
\end{array}
$
Thus, the increasing order of densities are
$
\mathrm{C}_3 \mathrm{H}_7 \mathrm{Cl} < \mathrm{C}_3 \mathrm{H}_7 \mathrm{Br} < \mathrm{C}_3 \mathrm{H}_7 \mathrm{I}(\mathrm{II} < \mathrm{I} < \mathrm{III})
$
Hence, the correct option is (1)