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==Alkanes, alkenes, and alkynes==

==Alkanes, alkenes, and alkynes==

===Alkanes===

===Alkanes===

These are aliphatic hydrocarbons which form the homologous series of the saturated hydrocarbons. They have the general molecular formula of CnH2n+2. Each of the alkane member has its carbon in SP3 hybridized state in which all carbon atoms are tetrahedrally bonded with a bond angle ranging from 109.28 degree and 25%  S-orbital character and 75% P-orbital character. They are made up of a single( sigma) bond. Examples are methane, ethane , propane e.t.c. They undergo combustion under much oxygen., substitution or replacement reactions(dehydrohalogenation) and elimination (dehydrogenation)reactions mainly.

These are aliphatic hydrocarbons which form the homologous series of the saturated hydrocarbons. They have the general molecular formula of CnH2n+2. Each of the alkane member has its carbon in SP3 hybridized state in which all carbon atoms are tetrahedrally bonded with a bond angle ranging from 109.28° and 25%  S-orbital character and 75% P-orbital character. They are made up of a single (sigma) bond. Examples are methane, ethane, propane, etc. They mainly undergo combustion under much oxygen, substitution or replacement reactions (dehydrohalogenation), and elimination (dehydrogenation) reactions.

====Laboratory preparation====

====Laboratory preparation====