Question

Which of the following molecule is planar?

• A. $CH_4$
• B. $NH_3$
• C. $C_2H_4$
• D. $SiCl_4$

Answer 1

Answer: (C)

$C_2H_4$

Answer 2

The hybridisation in $C_2H_4 (CH_2 =CH_2$) molecule is sp$^2$ hence, it is planar in shape.