question_answer

\[C{{H}_{3}}\cdot CH=C=C{{H}_{2}}\] has:

A)  only \[sp\text{-}\]hybridised carbon atoms

B)  both \[sp\] and \[sp\text{-}\]hybridised atoms

C)  only \[s{{p}^{2}}\text{-}\]hybridised carbon atoms

D)  \[sp,s{{p}^{2}}\] and \[s{{p}^{3}}\text{-}\]hybridised carbon atoms

Correct Answer: D

Solution :

Carbon atom, whose valencies are satisfied with 4 single bonds, is \[s{{p}^{3}}\text{-}\]hybrid. Carbon atom, whose valencies are satisfied with one double-bond, is \[s{{p}^{2}}\text{-}\]hybrid while the carbon atom, whose valencies are satisfied either by 2 double-bonds or one triple and one single bond, is \[sp\text{-}\]hybrid.