You may find all of the known isotopes of a given element by clicking on the chemical symbol of the desired element on the Periodic Table located at. It is important to note that the mass number is not shown on the Periodic Table. Three allotropic forms of the metal exist, with transition points at 235 and 540☌.Īnnual world wide production is around 3,00,000 tons.\): The Three Naturally-Occurring Isotopes of Oxygen Isotope The metal can be prepared by electrolysis of the molten strontium chloride (SrCl 2) mixed with potassium chloride (KCl), or by reducing strontium oxide (SrO) with aluminium in a vacuum at a temperature at which strontium distills off. It is found chiefly in the minerals celestite and strontianite. Radioactive strontium-90 is produced in nuclear explosions and released during nuclear plant accidents, which is particularly dangerous because it can be absorbed into the bones of young children.įor children exceeded strontium uptake may be a health risk, because it can cause problems with bone growth. In the human body, most of the absorbed strontium is deposited in the bones, In the ratio of strontium to calcium is between 1:1000 and 1:2000 roughly. It is Non-Toxic, Because it is similar to calcium. Strontium titanate (SrTiO 3) is an optical material, which has extremely high refractive index (measure of the bending of a ray of light when passing from one medium into another) and an optical dispersion greater than that of diamond. Strontium chloride hexahydrate (H 12Cl 2O 6Sr) is an ingredient in toothpaste for sensitive teeth. Modern ‘glow-in-the-dark ’ paints and plastics contain strontium aluminate (SrAl 2O 4), where they absorb light during the day and release it slowly for hours afterwards. It high-energy radiation can be used to generate electricity for space vehicles, remote weather stations and navigation buoys. Strontium-90 is a dangerously radioactive isotope, It is a by-product of nuclear reactors and present in nuclear fallout (from whose spent fuel is extracted). It is one of the best high-energy beta-emitters. It also has found use in producing ferrite magnets and in refining zinc. Strontium compounds are used in pyrotechnics and gives the brilliant red colour to fireworks and flares. If I need to know how many valence electrons are in an atom of Flourine, I just have to. SStrontim has similar uses of calcium and a brium but it is employed rarely because of its higher cost. You would add up the protons and neutrons to get this number. Naming: After the mineral strontianite, itself named after Strontian, Scotlandįirst isolation:Humphry Davy (1808) Strontium Uses The metal can also be prepared by electrolysis of a solution of strontium chloride in molten potassium chloride: The sulfate is reduced to the sulfide by the carbothermic reduction: The metal dissolves readily in dilute or concentrated hydrochloric acid (HCl) and forming Sr (II) ions and hydrogen gas. Sr (s) + I 2 (g) → SrI 2 (s) (Strontium (ll) iodide) Sr (s) + Br 2 (g) → SrBr 2 (s) (Strontium (ll) bromide) (b) Now add two more electrons to make an ion and give the symbol for the ion you have created. Sr (s) + Cl 2 (g) → SrCl 2 (s) (Strontium (ll) chloride) (a) Drag protons, neutrons, and electrons onto the atom template to make a neutral atom of Oxygen-16 and give the isotope symbol for this atom. Strontium react with Chlorine, bromine, iodine and forming Strontium (II) halides: Strontium reacts slowly with water and forming strontium hydroxide (Sr(OH) 2)and hydrogen gas (H 2). When Ignited, Strontium metal burns in air and reacts with both oxygen and nitrogen, to give a mixture of white strontium oxide (SrO) and strontium nitride (Sr 3N 2) Strontium reacts with oxygen (O 2)and forming a protective layer of SrO on the surface. Isotopes: 82 Sr 83 Sr 84 Sr 85 Sr 86 Sr 87 Sr 88 Sr 89 Sr 90 Sr Isotope Lattice constant: 608.49, 608.49, 608.49 pmįace Centered Cubic (FCC) Reactivity of StrontiumĮlectron affinity: 5.03 kJ/mol Nuclear Properties of Strontium The ionization potential of an atom: 5.67 Poisson ratio: 0.28 Atomic Properties of Strontium Molar magnetic susceptibility: 0.116×10 -9 m 3/mol Physical Properties of Strontiumĭensity: 2.64 g/cm 3 (In solid) 2.375 g/cm 3 (In Liquid) Mass magnetic susceptibility: 1.32×10 -9 m 3/kg Volume magnetic susceptibility: 0.00000347 Magnetic susceptibility (x mol): -92×10 -6 cm 3/mol Thermal conductivity: 35.4 W/(m∙K) Electrical properties of StrontiumĪ Electrical type: Conductor Magnetic Properties of Strontium Strontium Electron Configuration Thermal Properties of Strontiumĭebye temperature: 147 K (-126.15 oC, -195.07 oF)
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