Padron:Infobox beryllium

Beryllium, ₄Be

Beryllium
Bigkas	/bəˈrɪliəm/ ​(bə-RIL-ee-əm)
Appearance	white-gray metallic
Standard atomic weight Ar°(Be)
	9.0121831±0.0000005 9.0122±0.0001 (pinaikli)[1][2]
Beryllium sa talahanayang peryodiko
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson – ↑ Be ↓ Mg lithium ← beryllium → boron
Atomikong bilang (Z)	4
Group	2
Period	2
Block	s-block
Electron configuration	[He] 2s2
Electrons per shell	2, 2
Physical properties
Phase at STP	solido
Melting point	1560 K ​(1287 °C, ​2349 °F)
Boiling point	2742 K ​(2469 °C, ​4476 °F)
Density (at 20° C)	1.845 g/cm3[3]
when liquid (at m.p.)	1.690 g/cm3
Critical point	5205 K,  MPa (extrapolated)
Heat of fusion	12.2 kJ/mol
Heat of vaporization	292 kJ/mol
Molar heat capacity	16.443 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 states	0,[4] +1,[5] +2 (isang anpoterong oksido)
Electronegativity	Pauling scale: 1.57
Ionization energies	1st: 899.5 kJ/mol 2nd: 1757.1 kJ/mol 3rd: 14,848.7 kJ/mol (more)
Atomic radius	empirical: 112 pm
Covalent radius	96±3 pm
Van der Waals radius	153 pm
Mga linyang espektral ng beryllium
Other properties
Natural occurrence	primordiyal
Crystal structure	​hexagonal close-packed (hcp) (hP2)
Lattice constants	a = 228.60 pm c = 358.42 pm (at 20 °C)[3]
Thermal expansion	10.98×10−6/K (at 20 °C)[3][a]
Thermal conductivity	200 W/(m⋅K)
Electrical resistivity	36 nΩ⋅m (at 20 °C)
Magnetic ordering	diamagnetic
Molar magnetic susceptibility	−9.0×10−6 cm3/mol[6]
Young's modulus	287 GPa
Shear modulus	132 GPa
Bulk modulus	130 GPa
Speed of sound thin rod	12,890 m/s (at r.t.)[7]
Poisson ratio	0.032
Mohs hardness	5.5
Vickers hardness	1670 MPa
Brinell hardness	590–1320 MPa
CAS Number	7440-41-7
History
Discovery	Louis Nicolas Vauquelin (1798)
First isolation	Friedrich Wöhler & Antoine Bussy (1828)
Isotopes of beryllium t b
Main isotopes[8] Decay abun­dance half-life (t1/2) mode pro­duct 7Be trace 53.22 d ε 7Li 8Be synth 81.9 as α 4He 9Be 100% stable 10Be trace 1.387×106 y β− 10B
Kategorya: Beryllium tingnan usapan baguhin | references

1. ↑ "Standard Atomic Weights: Beryllium" (sa wikang Ingles). CIAAW. 2013.
2. ↑ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry (sa wikang Ingles). doi:10.1515/pac-2019-0603. ISSN 1365-3075.
3. ↑ ^{3.0 3.1 3.2} Arblaster, John W. (2018). Selected Values of the Crystallographic Properties of Elements. Materials Park, Ohio: ASM International. ISBN 978-1-62708-155-9.
4. ↑ Be(0) has been observed; see "Beryllium(0) Complex Found" (sa wikang Ingles). Chemistry Europe. 13 June 2016.
5. ↑ "Beryllium: Beryllium(I) Hydride compound data" (PDF) (sa wikang Ingles). bernath.uwaterloo.ca. Nakuha noong 2007-12-10.
6. ↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.
7. ↑ Haynes, William M., pat. (2011). CRC Handbook of Chemistry and Physics (ika-92nd (na) edisyon). Boca Raton, FL: CRC Press. p. 14.48. ISBN 1-4398-5511-0.
8. ↑ ^{8.0 8.1} Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.

Maling banggit (May <ref> tag na ang grupong "lower-alpha", pero walang nakitang <references group="lower-alpha"/> tag para rito); $2