Difference between revisions of "Template:Infobox beryllium"

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imported>Cybercobra
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|number=4
 
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|symbol=Be
|pronounce={{IPA-en|bəˈrɪliəm|}}, {{respell|bə|RIL|ee-əm}}
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|pronounce={{IPA-en|bəˈrɪliəm|}} {{respell|bə|RIL|ee-əm}}
 
|left=[[lithium]]
 
|left=[[lithium]]
 
|right=[[boron]]
 
|right=[[boron]]

Revision as of 00:30, 7 May 2010

[[Category:Template:Pagetype with short description]]

Beryllium, 4Be
Be-140g.jpg
Beryllium
Pronunciation/bəˈrɪliəm/ (Template:Respell)
Appearancewhite-gray metallic
Standard atomic weight Ar, std(Be)Template:Val[1]
Beryllium in the periodic table
Template:Periodic table (32 columns, micro) -

Be

Mg
lithiumberylliumboron
Atomic number (Z)4
Groupgroup 2 (alkaline earth metals)
Periodperiod 2
Block  s-block
Electron configuration[He] 2s2
Electrons per shell2, 2
Physical properties
Phase at STPsolid
Melting point1560 K ​(1287 °C, ​2349 °F)
Boiling point2742 K ​(2469 °C, ​4476 °F)
Density (near r.t.)1.85 g/cm3
when liquid (at m.p.)1.690 g/cm3
Heat of fusion12.2 kJ/mol
Heat of vaporization297 kJ/mol
Molar heat capacity16.443 J/(mol·K)
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 states0,[2] +1,[3] +2 (an amphoteric oxide)
ElectronegativityPauling scale: 1.57
Ionization energies
Atomic radiusempirical: 105[4] pm
calculated: 112 [5] pm
Covalent radius96±3 pm
Van der Waals radius153 pm
Color lines in a spectral range
Spectral lines of beryllium
Other properties
Natural occurrenceprimordial
Crystal structurehexagonal
Hexagonal crystal structure for beryllium
Speed of sound thin rod12870[6] m/s (at r.t.)
Thermal expansion11.3 µm/(m·K) (at 25 °C)
Thermal conductivity200 W/(m·K)
Electrical resistivity36 n Ω·m (at 20 °C)
Magnetic orderingdiamagnetic
Young's modulus287 GPa
Shear modulus132 GPa
Bulk modulus130 GPa
Poisson ratio0.032
Mohs hardness5.5
Vickers hardness1670 MPa
Brinell hardness600 MPa
CAS Number7440-41-7
Main isotopes of beryllium
[[Isotope|IsoTemplate:Shytope]] [[Natural abundance|AbunTemplate:Shydance]] Half-life (t1/2) Decay mode [[Decay product|ProTemplate:Shyduct]]
7Be trace 53.12 d ε 7Li
γ -
9Be 100% stable
10Be trace 1.36×106 y β 10B
Category Category: Beryllium
| references

[[Category:Infobox templates|Template:Remove first word]]

data m.p. cat
in calc from C diff report ref
C 1287
K 1560 1560 0
F 2349 2349 0 Template:Subpage other
max precision 0
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input C: 1287, K: 1560, F: 2349
comment
data b.p. cat
in calc from C diff report ref
C 2469
K 2742 2742 0
F 4476 4476 0 Template:Subpage other
max precision 0
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input C: 2469, K: 2742, F: 4476
comment

References

  1. Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
  2. Be(0) has been observed; see "Beryllium(0) Complex Found". Chemistry Europe. 13 June 2016.
  3. "Beryllium: Beryllium(I) Hydride compound data" (PDF). bernath.uwaterloo.ca. Retrieved 2007-12-10.
  4. "Published by J. C. Slater in 1964".
  5. "Calculated data".
  6. sound
  7. "Beryllium: Beryllium(I) Hydride compound data" (PDF). bernath.uwaterloo.ca. Retrieved 2007-12-10.