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Spectral lines of Magnesium |
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ନାମ, ପ୍ରତୀକ | magnesium, Mg |
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Appearance | shiny grey solid |
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ଉଚ୍ଚାରଣ | mag-NEE-zee-əm |
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ପରମାଣୁ କ୍ରମାଙ୍କ (Z) | 12 |
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ଶ୍ରେଣୀ, ବ୍ଳକ | group 2 (alkaline earth metals), s-block |
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ପର୍ଯ୍ୟାୟ | period 3 |
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ମୌଳିକ ପ୍ରକାର | alkaline earth metal |
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ମାନକ ପରମାଣବିକ ଓଜନ (±) (Ar) | 24.3050(6) |
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ଇଲେକ୍ଟ୍ରୋନ୍ ବିନ୍ୟାସ | [Ne] 3s2 |
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per shell | 2, 8, 2 |
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ଅବସ୍ଥା | solid |
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ଗଳନାଙ୍କ | 923 K (650 °C, 1202 °F) |
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ସ୍ଫୁଟନାଙ୍କ | 1363 K (1091 °C, 1994 °F) |
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Density near r.t. | 1.738 g/cm3 |
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when liquid, at m.p. | 1.584 g/cm3 |
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Heat of fusion | 8.48 kJ/mol |
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Heat of | 128 kJ/mol |
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Molar heat capacity | 24.869 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)
|
701
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773
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861
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971
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1132
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1361
| |
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Oxidation states | 2, 1[୧] strongly basic oxide |
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Electronegativity | Pauling scale: 1.31 |
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energies | (more) |
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Atomic radius | empirical: 160 pm |
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Covalent radius | 141±7 pm |
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Van der Waals radius | 173 pm |
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Crystal structure | hexagonal close-packed (hcp) |
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Speed of sound thin rod | (annealed) 4940 m/s (at r.t.) |
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Thermal expansion | 24.8 µm/(m·K) (at 25 °C) |
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Thermal conductivity | 156 W/(m·K) |
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Electrical resistivity | 43.9 n Ω·m (at 20 °C) |
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Magnetic ordering | paramagnetic |
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Young's modulus | 45 GPa |
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Shear modulus | 17 GPa |
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Bulk modulus | 45 GPa |
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Poisson ratio | 0.290 |
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Mohs hardness | 2.5 |
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Brinell hardness | 260 MPa |
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CAS Number | 7439-95-4 |
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ଆବିଷ୍କାର | Joseph Black (1755) |
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First isolation | Humphry Davy (1808) |
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| references |