Question

Which order is correct regarding stability of intermediates
(I). `CH_(2)=CH-overset(o+)(C)H_(2)`
(II). `CH_(2)=overset(o+)(C)H`
(III). `CH-=overset(o+)(C)`
A. I=II=III
B. IltIIltIII
C. III=IIgtI
D. IgtIIgtIII

Answer 1

Correct Answer - D
Structure
`I^(st)to"Allylic "C^(+)` (More stable)
`II^(nd)to"Vinylic "C^(+)`(Less stable)
`III^(rd)to`In 3rd option this `(HC-=C)` carbon is more electronegative and contain a positive charge make is less stable.