Question

the difference between "benzyl", "vinyl" and "allyl", is

vinyl is the C-atom located adjacent to a double bond while allyl is the C-atom participating the double bond

allyl is the C-atom located adjacent to a double bond while vinyl is the C-atom participating the double bond

benzyl is a C-atom within the benzene ringonds while vicinal halides are on single bonds

vinyl Cs are saturated C atoms with sp3 hybridization

Answer 1

Answer: Correct option is (b) i.e.allyl is the C-atom located adjacent to a double bond while vinyl is the C-atom participating the double bond.

Reason: Lets take an example showing allylic and vinylic carbon, both in same structure:

In the given formula the carbons in red colour are called as Vinylic carbon i.e. carbon participating in double bond whereas the carbon in blue colour is called as Allylic carbon i.e. carbon located adjacent to double bond.

Option (a) is wrong, vinyl is not the C-atom located adjacent to a double bond while allyl is not the C-atom participating the double bond. The statement (a) is just opposite to statement (b) and hence incorrect.

Option (c) is wrong because benzylic carbon is not the carbon within benzene ring bonds rather it is a carbon attached to benzene ring as follows:  

   C₆H₅CH₃ , Carbon in green is benzylic carbon

And Vicinal halides are not on single bonds, they are attached to double bonded carbon atoms.

Option (d) is wrong because Vinyl carbons are not saturated carbon rather they are unsaturated carbon and they don't have SP3 hybridisation rather they are SP2 hybridised.