Which of the following concerning $\sigma$ and $\pi$ bonds is/are correct?
1)A sigma bond may be formed from the sideways overlap of two parallel p orbitals.
2)No more than two pi bonds are possible between adjacent carbon atoms.
3)The considerable energy required to rotate pi bonded atoms is the primary reason for geometrical isomerism in some pi bonded molecules.
A) 1 only
B) 2 only
C) 3 only
D) 1 and 2
E) 2 and 3

Question

Quizplus · Accepted Answer

A sigma bond is formed by the end-to-end overlap of orbitals, not sideways. Two pi bonds can exist between adjacent carbon atoms, as seen in triple bonds. Pi bonds restrict rotation, leading to geometrical isomerism.

Which of the Following Concerning σ\sigmaσ And π\piπ Bonds Is/are Correct? 1)A Sigma Bond May Be Formed from Correct

Which of the Following Concerning $\sigma$ And $\pi$ Bonds Is/are Correct?
1)A Sigma Bond May Be Formed from Correct