What Hydrocarbon is C2H9?

Answer 1

No such thing..there are not enough bonds in 2 carbon atoms to
join with 9 hydrogens.

I think you meant C3H8....propane or C2 H4...ethene (ethylene)

or C2H6....ethane

Answer 2

I second fucose_man's answer. Carbon has four valence electrons, which means it can form four bonds. In C2, at least one electron per carbon is already used up by the C-C bond (possibly two or three per carbon if the two carbons share a double or a triple bond), leaving three more per carbon. Thus the maximum number of hydrogens such a carbon can attach is three. Generally if a straight-chained (non-ringed) hydrocarbon contains no double or triple carbon-carbon bonds, its formula will be CnH2n+2. That is, C2H6 for a 2-carbon hydrocarbon.

Answer 3

A non-existant one.

The most hydrogens a neutral C-2 species could have is 6.

Answer 4

That's not a question its a puzzle.you ask the q with the answer

Answer 5

have too many H's in that formula. the max for c2 is 6H.