ഫലകം:Infobox beryllium

വിക്കിപീഡിയ, ഒരു സ്വതന്ത്ര വിജ്ഞാനകോശം.
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ബെറിലിയം,  4Be
Be-140g.jpg
General properties
Pronunciation/bəˈrɪliəm/ (bə-RIL-ee-əm)
Appearancewhite-gray metallic
Standard atomic weight (Ar, standard)9.0121831(5)[1]
ബെറിലിയം in the periodic table
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
ലിഥിയംബെറിലിയംബോറോൺ
Atomic number (Z)4
Groupgroup 2 (alkaline earth metals)
Periodperiod 2
Blocks-block
Element category  alkaline earth metal
Electron configuration[He] 2s2
Electrons per shell
2, 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 states+1,[2] +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 ബെറിലിയം
Other properties
Crystal structurehexagonal close-packed (hcp)
Hexagonal close packed crystal structure for ബെറിലിയം
Speed of sound thin rod12,890 m/s (at r.t.)[3]
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[4]
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 ബെറിലിയം
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct
7Be trace 53.12 d ε 7Li
γ
9Be 100% stable
10Be trace 1.39×106 y β 10B
| references
Li ←

i'box Li

iso
4
Be E
→ B

i'box B

Data sets read by {{Infobox element}}
Name and identifiers
Top image
  image caption
  image alt
Pronunciation
Category (enwiki)
Standard atomic weight
  most stable isotope
Oxidation states
Spectral lines image

References

  1. Meija, J.; മറ്റുള്ളവർക്കൊപ്പം. (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. "Beryllium: Beryllium(I) Hydride compound data" (PDF). bernath.uwaterloo.ca. ശേഖരിച്ചത് 2007-12-10. }}
  3. Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 14.48. ISBN 1439855110.
  4. Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.
  5. "Beryllium: Beryllium(I) Hydride compound data" (PDF). bernath.uwaterloo.ca. ശേഖരിച്ചത് 2007-12-10.

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

  • <ref name="CIAAW2016" /> for the source Atomic weights of the elements 2013 (from subtemplates used by {{Infobox element}})

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