Aluminium Relative Atomic Mass

6 face atoms ½ 4 atoms. Iron is a chemical element with atomic number 26 and symbol Fe.

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It is the most common element on Earth by mass forming much of the outer and inner core of Earth.

. It is the third most abundant element after oxygen and silicon and the most abundant metal in the crust though it is less common in the mantle below. It is a metal that belongs to the periodic tables first transition series and group 8. This structure along with its hexagonal relative hcp has the most efficient packing 74.

By mass aluminium makes up about 8 of the Earths crust.

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