Template:Infobox beryllium

{{Infobox element

|engvar ={{{engvar|}}}

|name =beryllium

|symbol =Be

|Z =4

|number =4

|abundance=

|abundance in earth's crust=

|abundance in oceans=

|abundance in solar system=

|left=lithium

|right=boron

|above=–

|below=Mg

|appearance=white-gray metallic

|image name=Be-140g.jpg

|image upright=0.65

|electrons per shell=2, 2

|phase=

|phase comment=

|density=1.845 g/cm³

|density conditions=(at 20 °C)

|density gplstp=

|density gpcm3nrt=

|density gpcm3mp=1.690

|melting point K=1560

|melting point C=1287

|melting point F=2349

|boiling point K=2742

|boiling point C=2469

|boiling point F=4476

|triple point K=

|triple point kPa=

|critical point K=5400

|critical point MPa=46

|critical point comment=(estimated){{cite journal | last=Apfelbaum | first=E. M. | title=Estimate of Beryllium Critical Point on the Basis of Correspondence between the Critical and the Zeno-Line Parameters | journal=The Journal of Physical Chemistry B | volume=116 | issue=50 | date=2012-12-20 | issn=1520-6106 | doi=10.1021/jp309757a | pages=14660–14666| pmid=23194150 }}

|heat fusion=12.2

|heat vaporization=292

|heat capacity=16.443

|vapor pressure 1=1462

|vapor pressure 10=1608

|vapor pressure 100=1791

|vapor pressure 1 k=2023

|vapor pressure 10 k=2327

|vapor pressure 100 k=2742

|vapor pressure comment=

|crystal structure=hexagonal close packed

|crystal structure Pearson symbol=hP2

|lattice constants=a = 228.60 pm
c = 358.42 pm (at 20 °C){{cite book |last=Arblaster |first= John W. |title=Selected Values of the Crystallographic Properties of Elements |publisher=ASM International |publication-place=Materials Park, Ohio |date=2018 |isbn=978-1-62708-155-9}}

|electronegativity=1.57

|number of ionization energies=4

|ionization energy 1=899.5

|ionization energy 2=1757.1

|ionization energy 3=14,848.7

|atomic radius=112

|atomic radius calculated=

|covalent radius=96±3

|Van der Waals radius=153

|magnetic ordering=diamagnetic

|electrical resistivity unit prefix=n

|electrical resistivity at 0=

|electrical resistivity at 20=36

|thermal conductivity=200

|thermal conductivity 2=

|thermal diffusivity=

|thermal expansion=

|thermal expansion comment={{val|10.98|e=−6}}/K (at 20 °C){{efn|text=The thermal expansion is anisotropic: the parameters (at 20 °C) for each crystal axis are α_a = {{val|12.03|e=−6}}/K, α_c = {{val|8.88|e=−6}}/K, and α_average = α_V/3 = {{val|10.98|e=−6}}/K.}}

|thermal expansion at 25=

|speed of sound=

|speed of sound rod at r.t.=12,890

|speed of sound rod at r.t. ref={{RubberBible92nd|page=14.48}}

|magnetic susceptibility= {{val|−9.0|e=−6}}

|magnetic susceptibility ref= {{Cite book|title=CRC, Handbook of Chemistry and Physics|last=Weast|first=Robert|publisher=Chemical Rubber Company Publishing|year=1984|isbn=0-8493-0464-4|location=Boca Raton, Florida|pages=E110}}

|Young's modulus=287

|Shear modulus=132

|Bulk modulus=130

|Poisson ratio=0.032

|Mohs hardness= 6.0

|Vickers hardness=1670

|Brinell hardness=590–1320

|CAS number=7440-41-7

|naming=after mineral Beryl, from Greek βήρυλλος, which referred to various blue-green stones

|predicted by=

|prediction date=

|discovered by=Louis Nicolas Vauquelin

|discovery date=1798

|first isolation by=Friedrich Wöhler & Antoine Bussy

|first isolation date=1828

|history comment label=

|history comment=

|QID=Q569

}}

{{Infobox element/element navigation|symbol=Be}}