# Can a Lewis structure be drawn for any bonded molecule?

Carbon chemistry traditionally represents molecules as catenated $C - C$ systems, $C {H}_{2}$ and $C H$ chains. We can usually apportion the electrons to support this scheme of bonding. For, say diborane, ${B}_{2} {H}_{6}$, we would have to resort to 2 centre, 3 electron bonds to represent bonding in the molecule. Saturated carbon chemistry can generally be represented by 2 centre, 2 electron bonds.