Plz expalin last line .... emist try mistry |. (ii) vander waal sain is maximum in eclipsed conformation, and minimum in uent b

iemist try mistry |. (ii) Vander Waal strain: It is the repulsion between the group attac waal strain is maximum in eclipsed conformation, and minimum in Uent bonds. The vander anti conformation, while intermediate in gauche conformations. It is almost zero for H-atom since the sum of vander waal radii is less than internuclear distance between two H atom. steric strain H HH H-C H H C H C