Question

In the Newman projection for $2,2$-dimethylbutane
$X$ and $Y$ can respectively be

• A. $H$ and $H$
• B. $H$ and $C_2{H}_5$
• C. $C_2{H}_{5}andH$
• D. $C{H}_{3}andC{H}_3$

Answer 1

Answer: (B), (D)

On $C_2-C_{3}axis,X=C{H}_3,Y=C{H}_3$
On $C_1-C_{2}axis,X=H,Y=C_2{H}_5$