Which of the following DOES NOT represent the appropriate hybridization state of
the carbon atoms in the structures shown below?

(1) H--CN ; sp hybridized
(2) CH3(+) ; sp3 hybridized
(3) H2C==CH2 ; sp2 hybridized
(4) O=C=S ; sp2 hybridized

Which of the following DOES NOT represent the appropriate hybridization state of
the carbon atoms in the structures shown below?

(1) H--CN ; sp hybridized
(2) CH3(+) ; sp3 hybridized
(3) H2C==CH2 ; sp2 hybridized
(4) O=C=S ; sp2 hybridized


It's AMHD policy not to do homework.

What is your answer and why do you think so?