Al
Aluminium · element 13
Post-Transition Metal · Solid at room temperature
Aluminium (or aluminum; see different endings) is a chemical element in the boron group with symbol Al and atomic number 13. It is a silvery-white, soft, nonmagnetic, ductile metal. Aluminium is the third most abundant element (after oxygen and silicon), and the most abundant metal, in the Earth's crust.
Key facts
Atomic mass
26.98153857 u
how heavy one atom is
Phase (room temp.)
Solid
Density
2.7 g/cm³
how tightly packed it is
Melting point
933.47 K (660 °C)
when solid turns to liquid
Boiling point
2743 K (2470 °C)
when liquid turns to gas
Period
3
its row in the periodic table
Group
13
its column in the periodic table
Block
P-block
the neighbourhood it lives in
Electronegativity
1.61
how strongly it pulls electrons
Electron configuration
[Ne] 3s2 3p1
where its electrons live
Shells
2 · 8 · 3
electrons in each layer, inside to out
Named by
Humphry Davy
who gave it its name
Appearance
silvery gray metallic
what it looks like
Source: Wikipedia