Alkenes: Structure, Bonding & Reactivity Flashcards
1
Q
Are alkenes saturated or unsaturated hydrocarbons?
A
- Alkenes are unsaturated hydrocarbons
- Unsaturated means they have at least one C=C bond
2
Q
Describe the bonding in alkenes
A
- Bonding in alkenes involves a double covalent bond, a centre of high electron density
- Also involves π bond
3
Q
Why is there no rotation about the C=C double
bond?
A
- Due to the π (pi) orbital
- Pi bonds are formed from overlapping p orbitals
- Electron density above and below the single bonds attached to C=C, which holds the carbon atoms in place
4
Q
What is the general formula of alkenes?
A
- CnH2n