Question

In which of the following molecules, all atoms are coplanar ?

• A.
• B.
• C.
• D.

Answer 1

The correct option is C


All carbons are $s{p}^2$ hybridised.

In option (a.), the H atoms are out of plane.
In option (b.), all the C atoms are $s{p}^3$ hybridised.
In option (d.), all the C atoms are $s{p}^3$ hybridised.