ବେରିଲିୟମ (English: Beryllium) ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ । ଏହାର ପ୍ରତୀକ Be ଓ ପରମାଣୁ କ୍ରମାଙ୍କ ୪ ।
Quick facts ସାଧାରଣ ଗୁଣ, ନାମ, ପ୍ରତୀକ ...
Beryllium, 4Be |
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| ନାମ, ପ୍ରତୀକ | beryllium, Be |
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| Appearance | white-gray metallic |
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| ଉଚ୍ଚାରଣ | bə-RIL-ee-əm |
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| ପରମାଣୁ କ୍ରମାଙ୍କ (Z) | 4 |
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| ଶ୍ରେଣୀ, ବ୍ଳକ | group 2 (alkaline earth metals), s-block |
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| ପର୍ଯ୍ୟାୟ | period 2 |
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| ମୌଳିକ ପ୍ରକାର | alkaline earth metal |
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| ମାନକ ପରମାଣବିକ ଓଜନ (±) (Ar) | 9.012182(3) |
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| ଇଲେକ୍ଟ୍ରୋନ୍ ବିନ୍ୟାସ | [He] 2s2 |
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per shell | 2, 2 |
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| ଅବସ୍ଥା | solid |
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| ଗଳନାଙ୍କ | 1560 K (1287 °C, 2349 °F) |
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| ସ୍ଫୁଟନାଙ୍କ | 2742 K (2469 °C, 4476 °F) |
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| Density near r.t. | 1.85 g/cm3 |
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| when liquid, at m.p. | 1.690 g/cm3 |
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| Heat of fusion | 12.2 kJ/mol |
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| Heat of | 297 kJ/mol |
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| Molar heat capacity | 16.443 J/(mol·K) |
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pressure
| P (Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| at T (K) |
1462 |
1608 |
1791 |
2023 |
2327 |
2742 |
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| Oxidation states | 2, 1[୧] amphoteric oxide |
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| Electronegativity | Pauling scale: 1.57 |
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| energies |
(more) |
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| Atomic radius | empirical: 112 pm |
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| Covalent radius | 96±3 pm |
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| Van der Waals radius | 153 pm |
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| Crystal structure | hexagonal close-packed (hcp) |
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| Speed of sound thin rod | 12870[୨] m/s (at r.t.) |
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| Thermal expansion | 11.3 µm/(m·K) (at 25 °C) |
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| Thermal conductivity | 200 W/(m·K) |
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| Electrical resistivity | 36 n Ω·m (at 20 °C) |
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| Magnetic ordering | diamagnetic |
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| Young's modulus | 287 GPa |
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| Shear modulus | 132 GPa |
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| Bulk modulus | 130 GPa |
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| Poisson ratio | 0.032 |
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| Mohs hardness | 5.5 |
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| Vickers hardness | 1670 MPa |
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| Brinell hardness | 600 MPa |
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| CAS Number | 7440-41-7 |
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| ଆବିଷ୍କାର | Louis Nicolas Vauquelin (1797) |
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| First isolation | Friedrich Wöhler & Antoine Bussy (1828) |
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|
| iso |
NA |
half-life |
DM |
DE (MeV) |
DP |
| 7Be |
trace |
53.12 d |
ε |
0.862 |
7Li |
| γ |
0.477 |
- |
| 9Be |
100% |
9Be is stable with 5 neutrons |
| 10Be |
trace |
1.36×106 y |
β− |
0.556 |
10B |
|
| | references |
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