write the name of third member of alkenynes homologous series.
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butyne
Explanation:
Since the first member of alkyne series has 2 carbon atoms in it, therefore, third member of alkyne series will have 4 carbon atoms in its molecule. So, if we substitute n = 4 in the general formula CnH2n – 2 then the molecular formula of the third member of the alkyne series will be C4H2 × 4 – 2 or C4H6 . its name is butene
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