Aluminum by: anahi resendiz
*Group 13 *Melting point 660.323°C, 1220.581°F, 933.473 K *Period 3 *Boiling point 2519°C, 4566°F, 2792 K *Block p Density (g cm−3) 2.70 *Atomic number 13 *Relative atomic mass 26.982 *State at 20°C Solid Key isotopes 27Al *Electron configuration [Ne] 3s23p1 CAS number 7429-90-5
Although aluminum is the most abundant metal in the earth's crust, it is never found free in nature. All of the earth's aluminum has combined with other elements to form compounds. Two of the most common compounds are alum, such as potassium aluminum sulfate (KAl(SO4)
In some tables, Group 12 is is categorized with the post-transition metals, and in others, aluminum and tin are included characterized as Metalloids or poor metals. In our version of the table, we have chosen the most commonly accepted demarcations between these elements. Alkali metals.