Question

(a)
CH3
|
CH3 - CHCH=CHCH2CH2CH3 ​

Answer 1

Explanation:

Longest carbon chain has to be chosen such that the functional group has the lowest number.

So we start numbering from the carbon of aldehydic group (−CHO). Thus there are 5 carbon is the longest chain.

At C-2 ethyl group and at C-3 position methyl group is present. The suffix used for aldehydes is "al".

Therefore, the IUPAC name is: 2-Ethyl-3-methyl-pentanal.

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Answer 2

Answer:

I hope ur question may be

CH3

l

CH3 - CH=CH - CH2 - CH2 - CH3

THE IUPAC NAME WAS 2-methyl, 2-hexene