Draw the structure of a molecule which contains only carbon and hydrogen atoms (only three of which are carbon) and in which two of the carbons are sp2 hybridized and the other is sp hybridized.

CH₂ = C = CH₂

Explanation:

Hybridization is the mixing and blending of two or more pure atomic orbitals (s, p and d) to form two or more hybrid atomic orbitals that are identical in shape and energy e.d sp, sp², sp³, sp³d, sp³d² etc.

The structure of the organic molecule that contains only carbon and hydrogen atoms where there exist only three of which are carbon and in which two of the carbons are sp2 hybridized and the other is sp hybridized can be seen below.

CH₂ = C = CH₂                  ( where the = sign represent the double bonds)

Here, The two carbons that are sp₂ hybridized are CH₂

the other carbon that is sp hybdrized is C

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.