[DSandberg]

Stupid question: The CNT structure contains a lattice of carbons where each carbon is bonded to three other carbons. Is there some sort of aromaticity within the CNT to satisfy the carbon valence or is each carbon also bonded to one hydrogen?

[cheese (MSW)]

There is no such thing as a stupid question!  We learn by asking questions.
We don't give answers on this forum only hints.
Consider the bonding in related allotropes of carbon, namely graphite and
the fullerenes (e.g., C60, C70).  Review the bonding (MO description) in benzene.
The "dangling" C atom in nanotubes probably have their bonding requirements satisfied
by the formation of C≡C bonds, but that is just a guess.