Àdàkọ:Infobox alumíníọ̀mù

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Alumíníọ̀mù
13Al
B

Al

Ga
magnésíọ̀mùalumíníọ̀mùsílíkọ́nù
Ìhànsójú
silvery gray metallic


Spectral lines of aluminium
Àwọn ìdámọ́ wíwọ́pọ̀
Orúkọ, àmì-ìdámọ́, nọ́mbà alumíníọ̀mù, Al, 13
Ìpèlóhùn UK /ˌæljʉˈmɪniəm/
AL-ew-MIN-ee-əm;

US /əˈljmɪnəm/
ə-LEW-mi-nəm

Ẹ̀ka ẹ́límẹ̀nti other metal
Ẹgbẹ́, àsìkò, àdìpò 133, p
Ìwúwo átọ́mù 26.9815386(13)
Ìtòléra ẹ̀lẹ́ktrónì [Ne] 3s2 3p1
2, 8, 3
Electron shells of aluminium (2, 8, 3)
Ìtàn
Ìwárí Hans Christian Ørsted[1] (1825)
Ìyàsọ́tọ̀ àkọ́kọ́ Friedrich Wöhler[2] (1827)
Named by Humphry Davy (1808)
Physical properties
Phase solid
Density (near r.t.) 2.70 g·cm−3
Liquid density at m.p. 2.375 g·cm−3
Melting point 933.47 K, 660.32 °C, 1220.58 °F
Boiling point 2792 K, 2519 °C, 4566 °F
Heat of fusion 10.71 kJ·mol−1
Heat of vaporization 294.0 kJ·mol−1
Molar heat capacity 24.200 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1482 1632 1817 2054 2364 2790
Atomic properties
Oxidation states 3, 2[3], 1[4]
(amphoteric oxide)
Electronegativity 1.61 (Pauling scale)
Ionization energies
(more)
1st: 577.5 kJ·mol−1
2nd: 1816.7 kJ·mol−1
3rd: 2744.8 kJ·mol−1
Atomic radius 143 pm
Covalent radius 121±4 pm
Van der Waals radius 184 pm
Miscellanea
Crystal structure face-centered cubic
Alumíníọ̀mù has a face-centered cubic crystal structure
Magnetic ordering paramagnetic[5]
Electrical resistivity (20 °C) 28.2 nΩ·m
Thermal conductivity 237 W·m−1·K−1
Thermal expansion (25 °C) 23.1 µm·m−1·K−1
Speed of sound (thin rod) (r.t.) (rolled) 5,000 m·s−1
Young's modulus 70 GPa
Shear modulus 26 GPa
Bulk modulus 76 GPa
Poisson ratio 0.35
Mohs hardness 2.75
Vickers hardness 167 MPa
Brinell hardness 245 MPa
CAS registry number 7429-90-5
Àwọn ísótòpù dídúró jùlọ
Main article: Àwọn ísótòpù alumíníọ̀mù
iso NA half-life DM DE (MeV) DP
26Al trace 7.17×105 yr β+ 1.17 26Mg
ε - 26Mg
γ 1.8086 -
27Al 100% 27Al is stable with 14 neutrons
· r

References