Alkenes Flashcards
1
Q
Alkanes
A
Single bond
chemically inert
less reactive
2
Q
Alkenes
A
Double bond
two types of bonds σ and 𝛑
More chemically reactive
3
Q
σ bonds
A
axial symmetry (cylindrical) most electron density between nuclei lower in energy stronger rotation around the bond
4
Q
𝛑 bonds
A
planar symmetry lobes above and below plane of σ bonds higher in energy weaker more reactive no rotation as it would break the bond
5
Q
Acetylene
A
triple c bond
2 𝛑-bonds 1 σ-bond
6
Q
Benzene
A
𝛑 orbitals filled with electrons are delocalised over the whole ring
Result of two merging lewis structures = resonance
