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Aluminum

13
Al
26.98154
Aluminum
 General | States | Energies | Oxidation & Electrons | Appearance & Characteristics | Reactions | Other Forms Radius | Conductivity | Abundance

General:

Name: Aluminum Symbol: Al
Group: Metal Atomic weight: 26.98154
Density @ 293 K: 2.702 g/cm3 Atomic volume: 10.0 cm3/mol
Group: Metal discovered: 1825

States:

state (s, l, g): s
melting point: 933.57 K boiling point: 2740 K
Heat of fusion: 10.790 kJ/mol Heat of vaporization: 293.40 kJ/mol

Energies:

1st ionization energy: 577.6 kJ/mole
electronegativity: 1.61 2nd ionization energy: 1816.6 kJ/mole
electron affinity: 42.6 kJ/mole 3rd ionization energy: 2744.7 kJ/mole
Specific heat: 0.90 J/gK heat atomization: 326 kJ/mole atoms

Oxidation & Electrons:

Shells: 2,8,3 electron configuration: [Ne] 3s2 3p1
minimum oxidation number: 0 maximum oxidation number: 3
min. common oxidation no.: 0 max. common oxidation no.: 3

Appearance & Characteristics:

structure: fcc: face-centered cubic color: silvery
uses: Al cans & foil,reflectors toxicity:
hardness: 2.8 mohs characteristics: passivated: surface oxide

Reactions:

reaction with air: mild, w/ht =>Al2O3
reaction with 6M HCl: mild, =>H2, AlCl3 reaction with 6M HCl: mild, =>H2, AlCl3
reaction with 15M HNO3: passivated reaction with 6M NaOH: mild, =>H2, [Al(OH)4]-

Other Forms:

number of isotopes: 1 hydride(s): AlH3
oxide(s): Al2O3 chloride(s): AlCl3Al2Cl6

Radius:

ionic radius (2- ion): pm ionic radius (1- ion): pm
atomic radius: 143 pm ionic radius (1+ ion): pm
ionic radius (2+ ion): pm ionic radius (3+ ion): 67.5 pm

Conductivity:

thermal conductivity: 237 J/m-sec-deg
electrical conductivity: 376.676 1/mohm-cm polarizability: 8.3 A^3

Abundance:

source: Bauxite (oxide)
rel. abund. solar system: 4.929 log abundance earth's crust: 4.9 log
cost, pure: 1.8 $/100g cost, bulk: 0.12 $/100g