The only X-Factor I know of is the comic book, written currently by Peter David. And so far as I know, there are no autistic characters in X-Factor (Shatterstar doesn't count, he's not even from the same dimension as everyone else).
Now, Rahne Sinclair (Wolfsbane), who was with X-Factor for a while, is I believe back with her former New Mutant compatriots, and I understand that they have recently encountered Prof. Xavier's son Legion; however, last I saw, the writers had stopped referring to Legion's fugue-withdrawal state as "autistic" sometime in the Eighties (induced as it was by psychic overload, as Legion was telepathically linked with a large number of passengers on a crashing airliner)...
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Sodium is a metal that reacts explosively when exposed to water. Chlorine is a gas that'll kill you dead in moments. Together they make my fries taste good.