Topic 6C- alkenes Flashcards
1
Q
How is a sigma bond formed?
A
one sp2 orbital from each carbon overlap and form a single C-C bond
rotation can occur around the sigma bond
2
Q
how is a pi bond formed
A
The sideways overlap of 2 p orbitals on each carbon atom forming a pi bond above and below the plane of the molecule
there is limited rotation about the bond
3
Q
Explain why a pi bond is weaker than a sigma bond
A
pi bonds are exposed and have high electron density and are therefore vulnerable to attack from electrophiles
