Question

What is the hybrid state of carbon 1 and 2 in ethanal

Answer 1

Explanation:

Hybridization of carbon atom with four single bonds = $sp^3$

Hybridization of carbon atom with two single bonds and one double bond = $sp^2$

Hybridization of carbon atom with one single bond and one triple bond = $sp$

In the molecule of an ethanal that is $CH_3CHO$ , their are two carbon atoms. Carbon atom marked as $C_1$ is forming 4 single bonds with three hydrogen atoms and one with another carbon atom that $C_2$. Hence, the hybridization of $C_1$ is $sp^3$.

Carbon atom marked as $C_2$ is forming  one double bond with an oxygen atom and two single bonds with one hydrogen atom and one with $C_1$atom. Hence, the hybridization of $C_2$ is $sp^2$.