Question

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

• A. $H$ and $H$
• B. $H$ and $C_2H_5$
• C. $C_2H_5 \, and \, H$
• D. $CH_3 \, and \, CH_3$

Answer 1

Answer: (D)

$CH_3 \, and \, CH_3$

Answer 2

On $C_2-C_3 \, axis, \, X=CH_3,Y=CH_3$
On $C_1-C_2 \, axis, \, X=H,Y=C_2H_5$