Question

What is the name of this molecule?

H3C - C ≡ C - CH3

Answer: 1,2,3, or 4-butyne?

Answer 1

Step-by-step explanation:

The given molecule is

H3C - C ≡ C - CH3

The numbering order is shown below:

H3C - C ≡ C - CH3

1 2 3 4

So, the alkyne group is in the second position.

The carbon chain has four carbons.

Hence, the IUPAC name of the given compound is:

2-butyne.