Question

why 2, 3 diethyl Butene a wrong name​

Answer 1

Answer:

3,4-dimethyl hex-3-ene

Explanation:

Longest chain should be your parent chain.

Lowest Locant must be given to double bond...since it is symmetrical, in this case it doesn't matter

Answer 2

Answer:

Explanation:

1,3-dimethylbutane is wrong.

according to IUPAC

parent chain should contain maximum possible no of carbon in a row, which can be 5 in this case