Question

Which of the following is an isomer of Butane ?

• A. Pentane
• B. Cyclobutane
• C.
• D. Propane

Answer 1

The correct option is C

Isomers are molecules that have the same molecular formula, but have a different arrangement of the atoms in space.

Now,lets look at the options:

We have Butane:

$C{H}_{3}C{H}_{2}C{H}_{2}C{H}_3\to C_4{H}_{10}$

Pentane:$C_5{H}_{12}$

Cyclobutane:$C_4{H}_8$

Propane: $C_3{H}_8$

Hence the right answer is:

$C{H}_3-\stackrel{C{H}_3}{\stackrel{|}{CH}}-C{H}_3$ $\to$ $C_4{H}_{10}$