Question

part a
(a) $h_2c - ch_2 - ch_2 - ch_3$
$\underset{\underset{ch_3}{|}}{ch_2}$
2-ethyl-butane
spell out the full name of the compound.
the correct name is
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Explanation:

Step1: Find the longest carbon chain

The longest carbon chain has 5 carbon atoms (pentane).

Step2: Identify and name substituents

There is a methyl group ($\text{CH}_3$) on the second carbon atom.

Answer:

2 - methyl - pentane