Aluminum and aluminium are two names for element 13 on the periodic table. In both cases, the element symbol is Al, although Americans and Canadians spell and pronounce the name aluminum, while the British (and most of the rest of the world) use the spelling and pronunciation of aluminium. read more
Aluminum is older, while aluminium is more consistent with other element names such as helium, lithium, magnesium, and so on (though let’s not forget there are other -um elements—molybdenum, tantalum, and platinum). read more