Template:Infobox beryllium

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[[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
Critical point5205 K,  MPa (extrapolated)
Heat of fusion12.2 kJ/mol
Heat of vaporization292 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
  • 1st: 899.5 kJ/mol
  • 2nd: 1757.1 kJ/mol
  • 3rd: 14,848.7 kJ/mol
  • (more)
Atomic radiusempirical: 112 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 close-packed (hcp)
Hexagonal close packed crystal structure for beryllium
Speed of sound thin rod12,890 m/s (at r.t.)[4]
Thermal expansion11.3 µm/(m·K) (at 25 °C)
Thermal conductivity200 W/(m·K)
Electrical resistivity36 nΩ·m (at 20 °C)
Magnetic orderingdiamagnetic
Magnetic susceptibility−9.0·10−6 cm3/mol[5]
Young's modulus287 GPa
Shear modulus132 GPa
Bulk modulus130 GPa
Poisson ratio0.032
Mohs hardness5.5
Vickers hardness1670 MPa
Brinell hardness590–1320 MPa
CAS Number7440-41-7
History
DiscoveryLouis Nicolas Vauquelin (1798)
First isolationFriedrich Wöhler & Antoine Bussy (1828)
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 1.39×106 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
Li ←

i'box Li

iso
4
Be (E)
→ B

i'box B

  Data sets read by {{Infobox element}}
Name and identifiers
Top image (caption, alt)
Pronunciation
Category (enwiki)
Standard atomic weight
  most stable isotope
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Term symbol * (cmt, ref)
Wikidata *
* Not used in {{Infobox element}} (2019-02-03)
See also {{Infobox element/symbol-to--navbox}}

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. Template:RubberBible92nd
  5. Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

One of these is a named reference. It may be cited in the containing article as

  • <ref name="CIAAW2013" /> for the source Atomic weights of the elements 2013 (from subtemplates used by {{Infobox element}})

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