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प्रश्न
In the alkane H3C–CH2–C(CH3)2–CH2–CH(CH3)2, identify 1°,2°,3° carbon atoms and give the number of H atoms bonded to each one of these.
उत्तर
\[\begin{array}{cc}
\phantom{...}\ce{H}\phantom{.....}\ce{H}\phantom{...}\ce{^{1°}CH}\phantom{....}\ce{H}\phantom{..}\ce{^{1°}CH3}\phantom{..}\\
|\phantom{......}|\phantom{......}|\phantom{......}|\phantom{......}|\phantom{..}\\
\ce{H - C^{1°} - C^{2°} - C^{4°} - C^{2°} - C^{3°} - H}\\
|\phantom{......}|\phantom{......}|\phantom{......}|\phantom{......}|\phantom{..}\\
\phantom{..}\ce{H}\phantom{....}\ce{H}\phantom{...}\ce{_{1°}CH3}\phantom{....}\ce{H}\phantom{...}\ce{_{1°}CH3}\phantom{}
\end{array}\]
1° carbon atoms are those which are bonded to only one carbon atom, i.e., they have only one carbon atom as their neighbour. The given structure has five 1° carbon atoms and fifteen hydrogen atoms are attached to it.
2° carbon atoms are those which are bonded to two carbon atoms, i.e., they have two carbon atoms as their neighbours. The given structure has two 2° carbon atoms and four hydrogen atoms are attached to it.
3° carbon atoms are those which are bonded to three carbon atoms, i.e., they have three carbon atoms as their neighbours. The given structure has one 3° carbon atom and only one hydrogen atom is attached to it.
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