Question

11 multiple answer 2 points which statements describe a sigma (σ) bond? occurs in all single covalent bonds it is weaker than a π bond it is formed by end - to - end orbital overlap allows free rotation around the bond axis

Explanation:

A sigma bond is present in all single covalent bonds. It is formed via end - to - end (head - on) orbital overlap. Also, due to its symmetry about the bond axis, free rotation around the bond axis is possible. In contrast, a sigma bond is stronger than a pi bond, not weaker.

Answer:

• Occurs in all single covalent bonds
• It is formed by end - to - end orbital overlap
• Allows free rotation around the bond axis