CBSE - X - Chemistry
What are alkanes , alkenes and alkynes ?
- Alkanes are hydrocarbons in which all the linkages between the carbon atoms are single covalent bonds.
- Compounds are known as saturated hydrocarbons because all the four valencies of carbon are fully satisfied.
- General formula of alkanes: CnH2n+2
- Alkenes are unsaturated aliphatic hydrocarbons containing a carbon–carbon double bond.
- They are also called olefins because of their tendency to form oily products.
- General formula of alkenes: CnH2n
- Alkynes are unsaturated aliphatic hydrocarbons containing a carbon–carbon triple bond in their molecule.
- The general formula of alkynes is CnH2n−2.
- More reactive than alkenes because of the presence of a triple bond, often referred to as an acetylenic linkage.
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