
Aluminium (Al), also spelled as aluminum (in American and Canadian English) is a chemical element of the periodic table, located in the group 13 and the period 3, and is having the atomic number 13. It is a lightweight, silvery-white post transition metal, whose name comes from the Latin word “alumen”, which means bitter salt. It is a member of the boron group and is the third most abundant element on earth.
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– p block |
FAQs on Aluminium Element
Aluminium |
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‣ What does aluminium look like? Appearance: silvery grey metallic |
‣ When was aluminium discovered and by whom? Prediction: Antoine Lavoisier (1782) Discovery: Hans Christian Orsted (1824) Named by: Humphry Davy (1812) |
‣ Where is aluminium located on the periodic table?![]() Location: Aluminium is found in the third row of the periodic table below the boron element. |
‣ What is the atomic number of aluminium? Atomic number (Z): 13 |
‣ What’s the chemical symbol for aluminium? Symbol: Al |
‣ What is the atomic weight of aluminium? Standard atomic weight: 26.9815384 |
‣ What block is aluminum in on the periodic table? Block: p-block |
‣ In which group of the periodic table is aluminium found? Group: 13 (boron group) |
‣ What period is aluminium in on the periodic table? Period: 3 |
‣ What is the atomic radius of aluminium? Atomic radius: empirical: 143 pm |
‣ What is the covalent radius for aluminium? Covalent radius: 121±4 pm |
‣ Aluminium Van der Waals radius: 184 pm |
‣ What is aluminium melting point? Melting point: 933.47 K (660.32 °C, 1220.58 °F) |
‣ What is aluminium’s boiling point? Boiling point: 2743 K (2470 °C, 4478 °F) |
‣ How many electron shells does aluminium have? Electrons per shell: 2, 8, 3 |
‣ What is aluminium’s electron configuration? Electron configuration: [Ne] 3s2 3p1 |
‣ What is the ionization energy of aluminium? Ionization energies: 1st: 577.5 kJ/mol 2nd: 1816.7 kJ/mol 3rd: 2744.8 kJ/mol |
‣ What is aluminium phase at room temperature? Phase (at r.t): solid |
‣ What is aluminium density? Density (near r.t): 2.70 g/cm3 when liquid (at m.p): 2.375 g/cm3 |
‣ Aluminium magnetic ordering: paramagnetic |
‣ Aluminium natural occurrence: primordial |
‣ What is the oxidation state of aluminium? Oxidation state: +3 |
‣ Aluminium electronegativity: Pauling scale: 1.61 |
‣ Aluminium poisson’s ratio: 0.35 |
‣ Aluminium heat of fusion: 10.71 kJ/mol |
‣ Aluminium heat of vaporization: 284 kJ/mol |
‣ Aluminium molar heat capacity: 24.20 J/(mol K) |
‣ Aluminium molar magnetic susceptibility: +16.5 × 10-6 cm3/mol |
‣ Speed of sound in aluminium: (rolled) 5000 m/s (at r.t) |
‣ Is aluminium fcc or bcc? Crystal structure: face-centered cubic (fcc) |
‣ Thermal expansion of aluminium: 23.1 µm/(m.K) (at 25 °C) |
‣ Thermal conductivity of aluminium: 237 W/(m.K) |
‣ Aluminium electrical resistivity: 26.5 nΩ.m (at 20 °C) |
‣ What is the hardness of aluminium? Mohs hardness: 2.75 Vickers hardness: 160-350 MPa Brinell hardness: 160-550 MPa |
‣ Young’s modulus of aluminium: 70 GPa |
‣ Shear modulus of aluminium: 26 GPa |
‣ Bulk modulus of aluminium: 76 GPa |
‣ Aluminium CAS number: 7429-90-5 |
‣ Aluminium vapor pressure
Vapor pressure | ||||||
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P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
at T (K) | 1482 | 1632 | 1817 | 2054 | 2364 | 2790 |
‣ How many isotopes does aluminium have?
Main isotopes of aluminium | ||||
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Isotope | Abundance | Half-life (t1/2) | Decay mode | Product |
26Al | trace | 7.17 × 105 y | β+ ε γ | 26Mg 26Mg – |
27Al | 100 % | stable |
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