Write the structural formulas for each of the following alkanes: (a) `n`-Butane (b) Isobutane (c ) Neopentane Strategy: The prefix `n` is used for any alkane (no matter how large) in which `C` atoms form a continuos chain with no branching. In an isoalkane of six carbons of fewer, all carbons except one form a continous chain and that one `C` atom is attached to the next-to-end carbon. Neoalkane is characterized by the presence of a quaternary `C` atom.

Write the structural formulas for each of the following alkanes: (a) `

1.	Write the structural formulas for each of the following alkanes: (a) `n`-Butane (b) Isobutane (c ) Neopentane Strategy: The prefix `n` is used for any alkane (no matter how large) in which `C` atoms form a continuos chain with no branching. In an isoalkane of six carbons of fewer, all carbons except one form a continous chain and that one `C` atom is attached to the next-to-end carbon. Neoalkane is characterized by the presence of a quaternary `C` atom.
Answer» `underset(n-"Butane")(CH_(3)CH_(2)CH_(2)CH_(3)), underset("Isobutane")underset(CH_(3))underset(\|)(CH_(3)CHCH_(3)), underset("Neopentane")underset(CH_(3))underset(\|)overset(CH_(3))overset(\|)(CH_(3)C CH_(3))` An alkyl group is the structure remaining after one `H` is removed from an alkane.This group which constantly appears as the structural unit of alkanes is named simply by dropping-ane from the name of the corresponding alkane and replacing it by `-yl`. The general formula for an alkyl group is `C_(n)H_(2n+1)` Since it contains one less `H` atom than the parent alkane `C_(n)H_(2n+2)`