Which of the following compounds contain all the carbon atoms in the same hybridisation state ?

Options

A. `H-C -= C-C-=C-H`
B. `CH_(3)-C-=C-CH_(3)`
C. `CH_(2)=C=CH_(2)`
D. `CH_(2)=CH-CH=CH_(2)`

Answer

A, D

Explanation

(a) `H - overset(sp)(C) -=overset(sp)(C)-overset(sp)(C)-=overset(sp)(C)-H` (b) `overset(sp^(3))(C)H_(3)-overset(sp)(C)-=overset(sp)(C)-overset(sp^(3))(C)H_(3)`
(c) `overset(sp^(2))(C)H_(2)=overset(sp)(C)=overset(sp^(2))(C)H_(2)` (d) `overset(sp^(2))(C)H_(2) =overset(sp^(2))(C)H-overset(sp^(2))(C)H = overset(sp^(2))(C)H_(2)`