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Samarium oxide is a pale yellow powder, easy deliquescence, insoluble in water, soluble in mineral acids.

Uses: used for preparation of samarium metal, electronic device, such as magnetic materials.

Element symbol: Sm English Name: Chinese Name: Samarium samarium samarium oxide

Relative atomic mass: 150.4 common valence: +2, +3 electronegativity: 1.17

Peripheral electron configuration: 4F6 6s2 arrangement of extranuclear electrons: 2,8,18,24,8,2

Isotopes and radiation: Sm-144 Sm-145[340d] Sm-146[1.03E8y] Sm-147 (α [1.06E11y] Sm-148 ( put ) on Sm-149α [7.0E15y] ( Sm-150α) on Sm-151[90y] *Sm-152 Sm-153[1.92d] Sm-154 )

Electron affinity and can: 0 KJ ·mol-1

The first ionization energy: 543 KJ ·mol-1 second ionization energy: 1068 KJ· mol-1 third ionization energy : 0 KJ· mol-1

Single density: 7.54 g/cm3 elemental melting point: 1072 ℃boiling point: 1900℃Elemental

Atomic radius: 2.59 angstroms ion radius: 1.08 ( +3 ): 1.62 angstrom angstrom covalent radius

Common compounds: unknown discovery : Brouard Bode Ron time: 1879 location: France

The origin of the name of the:

After samarskite ( samarskite ).

Element description:

Silver white metal.

Elemental source:

And other rare earth elements coexist in monazite sand. Rare earth elements in monazite sand in the mass fraction of usually 50%, wherein the SM 2.8%.

Element use:

Used in electronic and industrial ceramics. SM easy magnetization is difficult demagnetization, this means that future in the solid state component and superconducting technology will have important applications in.