The molecular formula of first member of the family of alkenynes and its name is given by the set
A.C3H2,Alkene
B.C5H6,Pent-1-en-3-yne
C.C6H8,Hex-1-en-5-yne
D.C4H4,Butenyne
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Alkynes is a hydrocarbon in which 2 carbon atoms are connected by a triple bond. Therefore, The simplest alkyne will have 2 carbon atoms in its molecule.
The general formula for alkynes is :- CnH2n-2 ( n = 2,3,4,5.......)
According to the no. of carbon atoms, we have -
Meth, eth , prop , but , pent , hex , hept , oct ,non , dec
( we won't use Meth , As the simplest Alkyne will have 2 carbon atoms and Meth is used for 1 carbon atom , hence , we'll directly use eth. )
Substitute the value of n = 2 in the formula , U'll get ,
C2H2
For the nomenclature of the above compound ,
Add 'yne' as the primary suffix to the no. of carbon atoms used -
Above we used 2 carbon atoms , therefore, the name of the compound would be :- Eth + yne = Ethyne
The general formula for alkynes is :- CnH2n-2 ( n = 2,3,4,5.......)
According to the no. of carbon atoms, we have -
Meth, eth , prop , but , pent , hex , hept , oct ,non , dec
( we won't use Meth , As the simplest Alkyne will have 2 carbon atoms and Meth is used for 1 carbon atom , hence , we'll directly use eth. )
Substitute the value of n = 2 in the formula , U'll get ,
C2H2
For the nomenclature of the above compound ,
Add 'yne' as the primary suffix to the no. of carbon atoms used -
Above we used 2 carbon atoms , therefore, the name of the compound would be :- Eth + yne = Ethyne
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