Symbol Al
Atomic Number 13
Atomic Mass 26.98 amu
Discovered by Hans Christian Oersted in 1825

Chemical Properties of Aluminum

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
ChemSpider ID 4514248 ChemSpider is a free chemical structure database

What is Aluminum?

  • Aluminium is a soft, silvery-white, ductile, nonmagnetic metal in the boron group. It is the third most abundant element in the Earth’s crust. Depending on the surface reference, aluminum appears in the range from silvery to dull gray.

Uses of Aluminum

  • It is used in the transportation of railway, trucks, automobiles as castings.
  • It is used in packaging.
  • Al(II) compounds are observed in the reactions of Al metal with oxidants.
  • Using aluminon the presence of aluminum can be detected in qualitative analysis.

Properties of Aluminum

  • The element is highly reactive. It has about one-third of stiffness and density of steel.
  • Aluminium has good corrosion resistivity.
  • It is capable of superconductivity.
  • They are many unknown isotopes of hydrogen with the mass number ranging from twenty-one to forty-one.

Practise This Question

1 g charcoal adsorbs 100 ml of 0.5 M CH3CHOOH to form a monolayer. As a result molarity of acetic acid reduces to 0.49 M. What will be the surface area covered by each molecule of acetic acid? Given that surface area of charcoal =3.01×102m2/g.