Question

The total number of all possible isomeric ketones of molecular weight 100 and molecular formula $\left(C_6{H}_{12}O\right)$ is/are:

• A. 5
• B. 4
• C. 3
• D. 6

Answer 1

The correct option is D 6

For a compound with molecular formula $C_c{H}_h{X}_x{N}_n{O}_o$
$\text{Degree of unsaturation}=(c+1)-\frac{h}{2}-\frac{x}{2}+\frac{n}{2}$
Where, X = Halogen
c=number of carbon atom
h=number of hydrogen atom
n=number of nitrogen atom
o=number of oxygen atom
In $C_6{H}_{12}O$
$\text{Degree of unsaturation}=(6+1)-\frac{12}{2}=1$
The possible ketones (molecular formula $=C_6{H}_{12}O$) are 6