12
I have went through each option:
A) Freon is $\ce{CCl2F2},$ which is derived from methane
B) Teflon is a polymer of $\ce{-F2C-CF2 -}$ (or) $\ce{(C2F4)_n},$ derivative of 1,2-difloroethene. Here, carbon is saturated, which means no double or triple bond is present.
C) Iodoform is $\ce{CHI3},$ which again is a derivative of methane.
D) Vinyl chloride is ...
1
According to Markovnikov's rule we would get a vicinal diiodide, which is unstable.
The iodine atoms would undergo elimination and once again form a double bonded structure that is 1-propene.
As to why (excess) has been mentioned, 1-propene reacts with this $\ce{HI}$ undergoing an addition reaction. As per Markovnikov's rule, this would in fact form 2-...
Only top voted, non community-wiki answers of a minimum length are eligible
