Arrange the following conformations of ethane in the order of decreasing stability

A arrange the following resonating structures in the order of decreasing stability .

A arrange the following resonating structures in the order of decreasing stability .

Arrange the following free radicals in the order of decreasing stability: methyl (I) , vinyl (II) , allyl (III) , benzyl (IV)

Arrange the following free radicals in order of decreasing stability: Methyl(I), Vinly(II), Allyl(III), Benzyl(IV)

Arrange the following free radiacals in order of decreasing stability. Methyl (I), Vinyl(II), Allyl(III), Benzyl(IV)

Arrange the different type of conformations of butane in the decreasing order of stability.

Arrange the different type of conformations of butane in the decreasing order of stability.