Aluminum - Al

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

The Atomic Mass of aluminium is 26.98 amu.

Element Information

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 Aluminium?

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, aluminium appears in the range from silvery to dull grey.

Uses of Aluminium

  • 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 aluminium can be detected in qualitative analysis.

Properties of Aluminium

Various physical properties of aluminium have been discussed below:

  • 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.

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Frequently asked questions

1. Who discovered aluminium?

Ans: Hans Christian Orsted.

2. What is the atomic mass of aluminium?

Ans: The atomic mass of aluminium is 26.98 amu.

3. Aluminium belongs to which period?

Ans: 3.

4. Aluminium belongs to which group?

Ans: Aluminium is a group 13 element.

5. Aluminium is a ____ block element.

Ans: p.

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