You're on about pronunciation, but you do realize the spelling also changes, right? It's full on written out aluminum here. Both variants followed after alumium failed to stick, all derived from alumina, which was a shiny metal substance. It was originally named aluminum, but then somebody bitched about it not being in line with how the new alkali and alkaline earth metals were being spelled. So what the rest of the world has is the spelling of a fussy, whiny, conformist bitch, and we get the original. All the others don't have duality spellings, so that should answer your other question.
Can you bitch about Mo, Pt, & Ta?
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