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| No.9082441
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Information Name: | Supply samarium oxide |
Published: | 2012-09-03 |
Validity: | 300 |
Specifications: | 99 |
Quantity: | 1000.00 |
Price Description: | |
Detailed Product Description: | Samarium oxide Chemical Formula: Sm2O3 Appearance: light yellow powder, deliquescent, insoluble in water, soluble in inorganic acid. Purposes: Preparation for the samarium metal body of the electronic device, magnetic materials and other. Element symbols: Sm English name: Samarium Chinese name: samarium Relative atomic mass: 150.4 common valence: +2, +3 power negative: 1.17 External electronic arrangement: 4f6 6s2 the extranuclear arrangement: 2,8,18,24,8,2 Isotopes and radiation: Sm-144 Sm-145 [340d] Sm-146 [1.03E8y] Sm-147 (put α [1.06E11y]) Sm-148 (put α [7.0E15y]) Sm-149 (put α) Sm -150 Sm-151 [90y] * Sm-152 Sm-153 [1.92d] Sm-154 Electron affinity and energy: KJ · mol-1 The first ionization: 543 KJ · mol-1 second ionization: 1068 KJ · mol-1 third ionization: 0 KJ · mol-1 Elemental density: 7.54 g/cm3 elemental melting point: 1072.0 ℃ elemental Boiling Point: 1900.0 ° C Atomic radius: 2.59 angstrom ionic radius: 1.08 (+3) Egypt covalent radius: 1.62 angstrom Common compounds: unknown Found that people: Buwabodelang Time: 1879 Location: France Origin of the name: Named after the niobium xenotime (samarskite). Element Description: Silvery white rare earth metal. Element Source: Coexist with other rare earth elements in monazite sand. The mass fraction of the rare earth elements in monazite sand is usually 50%, which samarium accounted for 2.8%. Elements Uses: For electronic and ceramic industries. Samarium easy magnetization is difficult to demagnetization, which means that in the future will have important applications in solid state devices and superconducting technology will be. Description: easy to absorb water suction, to be stored in a dry place and should not be exposed to the weather, transportation strict precautions against Moisturized. |
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Copyright © GuangDong ICP No. 10089450, The Ganzhou City Liye Rare Earth Co., Ltd. All rights reserved.
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You are the 5401 visitor
Copyright © GuangDong ICP No. 10089450, The Ganzhou City Liye Rare Earth Co., Ltd. All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility