Ethylene, a gas found in nature, is commonly used to ripen bananas and other fruits. which compound is ethylene? 2 c h 2 are single bonded to each other, and both are single bonded to the same o. a skeletal model with a chain beginning with o h, then line segments going up, down, up and ending at another o h. 2 carbons are double-bonded to each other; the pair are single bonded to h above left, above right, below right, and below left. two carbons are triple bonded to each other; each is single bonded to h to the outside.