you can't
booger
it's more often in sinnoh but rarer in wherever emerald was based in.i'd say you need to trade to get one from sinnoh.
In the elite four, you have to battle Lucian.
Gengar helped Xatu and Alakazam. You see him there in a cutscene.
well u see u catch an Abra and evolve it to alakazam and then u have it my friend told me this
No, only from emerald to silver, but i dont see why you have to, you have the region already there.
Elite four member Lucian uses an Alakazam when you battle him at the Pokemon league.
see me
there is no way to do that
in the pokedex
somewhere
See related link.