Àdàkọ:Infobox bẹ́rílíọ̀mù

Bẹ́rílíọ̀mù, ₄Be

Bẹ́rílíọ̀mù
Pípè	/bəˈrɪliəm/ ​(bə-RIL-ee-əm)
Ìhànsójú	white-gray metallic
Ìwúwo átọ̀mù Ar, std(Be)	9.0121831(5)
Bẹ́rílíọ̀mù ní orí tábìlì àyè
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 lítíọ̀mù‎ ← bẹ́rílíọ̀mù → bórọ̀nù
Nọ́mbà átọ̀mù (Z)	4
Ẹgbẹ́	group 2 (alkaline earth metals)
Àyè	àyè 2
Àdìpọ̀	Àdìpọ̀-s
Ẹ̀ka ẹ́límẹ́ntì	Alkaline earth metal
Ìtò ẹ̀lẹ́ktrọ́nù	[He] 2s2
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan	2, 2
Àwọn ohun ìní ara
Ìfarahàn at STP	solid
Ìgbà ìyọ́	1560 K ​(1287 °C, ​2349 °F)
Ígbà ìhó	2742 K ​(2469 °C, ​4476 °F)
Kíki (near r.t.)	1.85 g/cm3
when liquid (at m.p.)	1.690 g/cm3
Heat of fusion	12.2 kJ/mol
Heat of	297 kJ/mol
Molar heat capacity	16.443 J/(mol·K)
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, +1, +2 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
Electronegativity	Pauling scale: 1.57
energies	(more)
Atomic radius	empirical: 112 pm
Covalent radius	96±3 pm
Van der Waals radius	153 pm
Color lines in a spectral range Spectral lines of bẹ́rílíọ̀mù
Other properties
Natural occurrence	primordial
Crystal structure	​hexagonal
Speed of sound thin rod	12870 m/s (at r.t.)
Thermal expansion	11.3 µm/(m·K) (at 25 °C)
Thermal conductivity	200 W/(m·K)
Electrical resistivity	36 n Ω·m (at 20 °C)
Magnetic ordering	diamagnetic
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 Number	7440-41-7
History
Discovery	Louis Nicolas Vauquelin (1797)
First isolation	Friedrich Wöhler & Antoine Bussy (1828)
Main isotopes of bẹ́rílíọ̀mù
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct 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

References

This reference list does not appear in the article.