Explain why CH9 can not be formed covalently?

Question

not very good at this at all...

Answer 1

CH9 cannot be formed at all, by either covalent bonds or ionic bonds. Carbon always has a valence of -4 when combined with hydrogens +1 valence. There would have to be three more carbons, along with a carbon-carbon double bond or a three-carbon ring (which is very hard to make), to produce the proper C4H9 molecule.