The International Union of Pure and Applied Chemistry (IUPAC) adopted aluminium as the standard international name for the element in 1990. In 1993, they recognized aluminum as an acceptable variant; the most recent 2005 edition of the IUPAC nomenclature of inorganic chemistry also acknowledges this spelling. IUPAC official publications use the -ium spelling as primary, and they list both where it is appropriate.
Maybe add that both numbers are looked for whit the Legolas-Gimli Score. Tried 43 and wondered why it didnt work. Then tried 1 and 2 as that was the difference