name CH3 - CH = C - CH3
!
Cl
2 answers
You see that it's impossible to draw structures on the board. I can't tell where the Cl atom is attached; however, the name will be number-chloro-2-butene such as 1-chloro-2-butene, or 2-chloro-2-butene,etc. I assume from the number of H atoms, that the Cl is attached to the 3rd C from the left. That would make it 2-chloro-2-butene.
The best way to draw simple structures on here is to use the format uaed by old type setters.
CH3 - C(H) = C(Cl) - CH3
so (Z or E) 2-chloro-2-butene
or you could use
(Z or E) 2-chloro-but-2-ene
CH3 - C(H) = C(Cl) - CH3
so (Z or E) 2-chloro-2-butene
or you could use
(Z or E) 2-chloro-but-2-ene