chem-hybridization (urgent)

1. What is the hybridization of buta-1,3-diene?

Buta-1,3-diene: CH2=CH-CH=CH2
Going from left to right, the four carbon atoms are sp², sp², sp² and sp² hybridized.
(All the four carbon atoms are sp² hybridized.)


2. What is the hybridization of buta-1,2-diene?

Buta-1,2-diene: CH2=C=CH-CH3
Going from left to right, the four carbon atoms are sp², sp, sp² and sp³ hybridized.


(If a carbon atom forms 4 σ bonds, it is sp³ hybridized.)(If a carbon atom forms 3 σ bonds and 1 π bond, it is sp² hybridized.)
(If a carbon atom forms 2 σ bonds and 2 π bonds, it is sp hybridized.)