Question
Give the names $n-$pentane, and Neo$-$pentane to the above structural formulae.
(Use the same logic as used in the names of the isomeric butanes for their purpose).

Answer

In the above question
$(i)$ Structure is n-pentane
$(ii)$ Structure is i-pentane or isopentane
$(iii)$ Structure is Neopentane.
There are two isomers of Butane $(C_4H_{10}). n-$Butane and isobutane.
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