Àdàkọ:Infobox bẹ́rílíọ̀mù

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Bẹ́rílíọ̀mù
4Be
-

Be

Mg
lítíọ̀mù‎bẹ́rílíọ̀mùbórọ̀nù
Ìhànsójú
white-gray metallic
Àwọn ìdámọ́ wíwọ́pọ̀
Orúkọ, àmì-ìdámọ́, nọ́mbà bẹ́rílíọ̀mù, Be, 4
Ìpèlóhùn /bəˈrɪliəm/ bə-RIL-ee-əm
Ẹ̀ka ẹ́límẹ̀nti mẹ́tàlì alkalínì ilẹ̀
Ẹgbẹ́, àsìkò, àdìpò 22, s
Ìwúwo átọ́mù 9.012182(3)
Ìtòléra ẹ̀lẹ́ktrónì [He] 2s2
2, 2
Electron shells of beryllium (2, 2)
Ìtàn
Ìwárí Louis Nicolas Vauquelin (1797)
Ìyàsọ́tọ̀ àkọ́kọ́ Friedrich Wöhler & Antoine Bussy (1828)
Physical properties
Phase solid
Density (near r.t.) 1.85 g·cm−3
Liquid density at m.p. 1.690 g·cm−3
Melting point 1560 K, 1287 °C, 2349 °F
Boiling point 2742 K, 2469 °C, 4476 °F
Heat of fusion 12.2 kJ·mol−1
Heat of vaporization 297 kJ·mol−1
Molar heat capacity 16.443 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1462 1608 1791 2023 2327 2742
Atomic properties
Oxidation states 2, 1[1]
(amphoteric oxide)
Electronegativity 1.57 (Pauling scale)
Ionization energies
(more)
1st: 899.5 kJ·mol−1
2nd: 1757.1 kJ·mol−1
3rd: 14848.7 kJ·mol−1
Atomic radius 112 pm
Covalent radius 96±3 pm
Van der Waals radius 153 pm
Miscellanea
Crystal structure hexagonal
Bẹ́rílíọ̀mù has a hexagonal crystal structure
Magnetic ordering diamagnetic
Electrical resistivity (20 °C) 36 nΩ·m
Thermal conductivity 200 W·m−1·K−1
Thermal expansion (25 °C) 11.3 µm·m−1·K−1
Speed of sound (thin rod) (r.t.) 12870[2] m·s−1
Young's modulus 287 GPa
Shear modulus 132 GPa
Bulk modulus 130 GPa
Poisson ratio 0.032
Mohs hardness 5.5
Vickers hardness 1670 MPa
Brinell hardness 600 MPa
CAS registry number 7440-41-7
Àwọn ísótòpù dídúró jùlọ
Main article: Àwọn ísótòpù bẹ́rílíọ̀mù
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
· r

References

  1. "Beryllium: Beryllium(I) Hydride compound data" (PDF). bernath.uwaterloo.ca. Retrieved 2007-12-10. 
  2. Àdàkọ:RubberBible86th