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प्रश्न
What is meant by homologous series?
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उत्तर
A series of compounds of the same family in which each member has the same type of carbon skeleton and functional group and differs from the next member by a constant difference of one methylene group \[\ce{(-CH2-)}\] in its molecular and structural formula is called a homologous series.
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संबंधित प्रश्न
Draw a formula for the first five members of the homologous series beginning with the given compound.
H–CH=CH2
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Identify primary, secondary, tertiary and quaternary carbon in the following compounds.
\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{.....}|\phantom{...............}\\
\ce{CH3}\phantom{..}\ce{CH3}\phantom{.............}
\end{array}\]
Identify primary, secondary, tertiary, and quaternary carbon in the following compound.
\[\begin{array}{cc}
\ce{CH3}\phantom{..................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3} \ce{CH3}\phantom{..............}
\end{array}\]
Identify primary, secondary, tertiary and quaternary carbon in the following compounds.
\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{...................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
\phantom{}|\phantom{....}|\phantom{...............}\\
\phantom{}\ce{CH3}\phantom{.}\ce{CH3}\phantom{.............}
\end{array}\]
Identify the α - carbons in the following species and give the total number of
\[\ce{CH3 -CH2 -\overset{⊕}{C}H -CH2 -CH3}\]
Identify primary, secondary, tertiary and quaternary carbon in the following compounds.
\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3}\ce{CH3}\phantom{..............}
\end{array}\]
Identify primary, secondary, tertiary, and quaternary carbons in the following compound.
\[\begin{array}{cc}
\ce{CH3\phantom{.................}}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3 CH3\phantom{.............}}
\end{array}\]
Identify primary, secondary, tertiary and quaternary carbon in the following compound.
\begin{array}{cc}
\ce{CH3}\phantom{..................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3}\ce{CH3}\phantom{..............}
\end{array}
Identify the α - carbons in the following species and give the total number of α-hydrogen in each.
\[\ce{CH3 - CH2 - \overset{\oplus}{C}H - CH2 - CH3}\]
Indicate the σ and π bonds in the following molecule:
\[\ce{HCONHCH3}\]
Identify primary, secondary, tertiary and quaternary carbon in the following compound:
\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3}\phantom{.}\ce{CH3}\phantom{..............}\\
\end{array}\]
Identify primary, secondary, tertiary and quaternary carbon in the following compound.
\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{.....}|\phantom{................}\\
\ce{CH3}\phantom{.}\ce{CH3}\phantom{..............}
\end{array}\]
