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ନାମ, ପ୍ରତୀକ | aluminium, Al |
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Appearance | silvery gray metallic |
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ଉଚ୍ଚାରଣ | AL-ew-MIN-ee-əm;
ə-LEW-mi-nəm |
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ପରମାଣୁ କ୍ରମାଙ୍କ (Z) | 13 |
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ଶ୍ରେଣୀ, ବ୍ଳକ | group 13, p-block |
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ପର୍ଯ୍ୟାୟ | period 3 |
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ମୌଳିକ ପ୍ରକାର | post-transition metal |
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ମାନକ ପରମାଣବିକ ଓଜନ (±) (Ar) | ୨୬.୯୮୧୫୩୮୬(13) |
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ଇଲେକ୍ଟ୍ରୋନ୍ ବିନ୍ୟାସ | [Ne] 3s2 3p1 |
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per shell | 2, 8, 3 |
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ଅବସ୍ଥା | solid |
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ଗଳନାଙ୍କ | 933.47 K (660.32 °C, 1220.58 °F) |
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ସ୍ଫୁଟନାଙ୍କ | 2792 K (2519 °C, 4566 °F) |
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Density near r.t. | 2.70 g/cm3 |
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when liquid, at m.p. | 2.375 g/cm3 |
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Heat of fusion | 10.71 kJ/mol |
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Heat of | 294.0 kJ/mol |
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Molar heat capacity | 24.200 J/(mol·K) |
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pressure
P (Pa)
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1
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10
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100
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1 k
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10 k
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100 k
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at T (K)
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1482
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1632
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1817
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2054
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2364
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2790
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Oxidation states | 3, 2[୧], 1[୨] amphoteric oxide |
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Electronegativity | Pauling scale: 1.61 |
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energies | (more) |
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Atomic radius | empirical: 143 pm |
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Covalent radius | ୧୨୧±୪ pm |
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Van der Waals radius | 184 pm |
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Crystal structure | face-centered cubic (fcc) |
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Speed of sound thin rod | (rolled) 5,000 m/s (at r.t.) |
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Thermal expansion | 23.1 µm/(m·K) (at 25 °C) |
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Thermal conductivity | 237 W/(m·K) |
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Electrical resistivity | 28.2 n Ω·m (at 20 °C) |
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Magnetic ordering | paramagnetic[୩] |
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Young's modulus | 70 GPa |
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Shear modulus | 26 GPa |
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Bulk modulus | 76 GPa |
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Poisson ratio | 0.35 |
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Mohs hardness | 2.75 |
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Vickers hardness | 167 MPa |
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Brinell hardness | 245 MPa |
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CAS Number | 7429-90-5 |
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Prediction | Antoine Lavoisier[୪] (1787) |
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First isolation | Friedrich Wöhler[୪] (1827) |
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Named by | Humphry Davy[୪] (1807) |
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| references |