سټرونټيوم

د ويکيپېډيا، وړیا پوهنغونډ له خوا
و اصلی برخی ته ورشی د پلټنې ځای ته ورټوپ کړی
Strontium,  38Sr
Strontium destilled crystals.jpg
عمومي خواص
Pronunciation /ˈstrɒnʃəm,_ʔʃiəm,_ʔtiəm/
STRON-sh(ee)-əm or STRON-tee-əm
Appearance silvery white metallic; with a pale yellow tint[۱]
Strontium په دوراني جدول کې
Hydrogen (diatomic nonmetal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline earth metal)
Boron (metalloid)
Carbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oxygen (diatomic nonmetal)
Fluorine (diatomic nonmetal)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silicon (metalloid)
Phosphorus (polyatomic nonmetal)
Sulfur (polyatomic nonmetal)
Chlorine (diatomic nonmetal)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline earth metal)
Scandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Chromium (transition metal)
Manganese (transition metal)
Iron (transition metal)
Cobalt (transition metal)
Nickel (transition metal)
Copper (transition metal)
Zinc (transition metal)
Gallium (post-transition metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (polyatomic nonmetal)
Bromine (diatomic nonmetal)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline earth metal)
Yttrium (transition metal)
Zirconium (transition metal)
Niobium (transition metal)
Molybdenum (transition metal)
Technetium (transition metal)
Ruthenium (transition metal)
Rhodium (transition metal)
Palladium (transition metal)
Silver (transition metal)
Cadmium (transition metal)
Indium (post-transition metal)
Tin (post-transition metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (diatomic nonmetal)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline earth metal)
Lanthanum (lanthanide)
Cerium (lanthanide)
Praseodymium (lanthanide)
Neodymium (lanthanide)
Promethium (lanthanide)
Samarium (lanthanide)
Europium (lanthanide)
Gadolinium (lanthanide)
Terbium (lanthanide)
Dysprosium (lanthanide)
Holmium (lanthanide)
Erbium (lanthanide)
Thulium (lanthanide)
Ytterbium (lanthanide)
Lutetium (lanthanide)
Hafnium (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Rhenium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Gold (transition metal)
Mercury (transition metal)
Thallium (post-transition metal)
Lead (post-transition metal)
Bismuth (post-transition metal)
Polonium (post-transition metal)
Astatine (metalloid)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline earth metal)
Actinium (actinide)
Thorium (actinide)
Protactinium (actinide)
Uranium (actinide)
Neptunium (actinide)
Plutonium (actinide)
Americium (actinide)
Curium (actinide)
Berkelium (actinide)
Californium (actinide)
Einsteinium (actinide)
Fermium (actinide)
Mendelevium (actinide)
Nobelium (actinide)
Lawrencium (actinide)
Rutherfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hassium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (transition metal)
Nihonium (unknown chemical properties)
Flerovium (unknown chemical properties)
Moscovium (unknown chemical properties)
Livermorium (unknown chemical properties)
Tennessine (unknown chemical properties)
Oganesson (unknown chemical properties)
Ca

Sr

Ba
rubidiumstrontiumyttrium
اټومي شمیره (Z) 38
گروپ, پیریود group 2 (alkaline earth metals), period 5
بلاک s-block
Element category   alkaline earth metal
معياري اټومي وزن (Ar) کينډۍ:Val[۲]
Electron configuration [Kr] 5s2
Electrons per shell
2, 8, 18, 8, 2
فزیکي خواص
حالت (at STP) جامد
دويلې کيدو ټکى 1050 K ​(777 °C, ​1431 °F)
يشنا ټکی 1650 K ​(1377 °C, ​2511 °F)
Density near r.t. 2.64 g/cm3
when liquid, at m.p. 2.375 g/cm3
Heat of fusion 7.43 kJ/mol
Heat of vaporization 141 kJ/mol
Molar heat capacity 26.4 J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 796 882 990 1139 1345 1646
اټومي خواص
Oxidation states 2, 1[۳] ​(a strongly basic oxide)
Electronegativity Pauling scale: 0.95
Ionization energies
  • 1st: 549.5 kJ/mol
  • 2nd: 1064.2 kJ/mol
  • 3rd: 4138 kJ/mol
Atomic radius empirical: 215 pm
Covalent radius 195±10 pm
Van der Waals radius 249 pm
Miscellanea
Crystal structureface-centered cubic (fcc)
Face-centered cubic crystal structure for strontium
Thermal expansion 22.5 µm/(m·K) (at 25 °C)
د تودوخې تېرېدنه 35.4 W/(m·K)
Electrical resistivity 132 nΩ·m (at 20 °C)
Magnetic ordering paramagnetic
Magnetic susceptibility (χmol) −92.0·10−6 cm3/mol (298 K)[۴]
Young's modulus 15.7 GPa
Shear modulus 6.03 GPa
Poisson ratio 0.28
Mohs hardness 1.5
CAS Number 7440-24-6
History
Naming after the mineral strontianite, itself named after Strontian, Scotland
Discovery William Cruickshank (1787)
First isolation Humphry Davy (1808)
Main isotopes of strontium
آيسو­ټوپ Abun­dance نیم ژوند (t1/2) Decay mode Pro­duct
82Sr syn 25.36 d ε 82Rb

کينډۍ:Infobox element/isotopes decay3

84Sr 0.56% stable

کينډۍ:Infobox element/isotopes decay2

86Sr 9.86% stable
87Sr 7.00% stable
88Sr 82.58% stable

کينډۍ:Infobox element/isotopes decay2

90Sr trace 28.90 y β 90Y
| references | in Wikidata

سټرونټيوم (په انگرېزي: Strontium) له کیمیاوي عناصرو څخه یو دی چې په تناوبي جدول کې د Sr سمبول او ۳۸ اتمي شمېرې په وسیله ښودل شوی دی.

مشخصات[سمول]

تاریخچه[سمول]

مرکبات[سمول]

د استعمال ځایونه[سمول]

سرچينې[سمول]

  1. Greenwood and Earnshaw, p. 112
  2. Meija, J.; Coplen, T. B. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure Appl. Chem. 88 (3): 265-91. doi:10.1515/pac-2015-0305. https://www.degruyter.com/downloadpdf/j/pac.2016.88.issue-3/pac-2015-0305/pac-2015-0305.xml. 
  3. Colarusso, P.; Guo, B.; Zhang, K.-Q.; Bernath, P. F. (1996). "High-Resolution Infrared Emission Spectrum of Strontium Monofluoride". J. Molecular Spectroscopy 175: 158. doi:10.1006/jmsp.1996.0019. Bibcode1996JMoSp.175..158C. http://bernath.uwaterloo.ca/media/149.pdf. 
  4. Weast, Robert (1984). [اصطلاحي تېروتنه: د ناپېژندلې ليکنښې لوښه "۱". CRC, Handbook of Chemistry and Physics]. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4. 

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