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Samarium is a chemical element; it has symbol Sm and atomic number 62. It is a moderately hard silvery metal that slowly oxidizes in air. Being a typical member of the lanthanide series, samarium usually has the oxidation state +3.
Most of the chemistry has been observed only for the first three members of the group; chemical properties of lawrencium are not well-characterized, but what is known and predicted matches its position as a heavier homolog of lutetium. The remaining elements of the group (scandium, yttrium, lutetium) are quite electropositive.
Samarium carbides are prepared by melting a graphite-metal mixture in an inert atmosphere. After the synthesis, they are unstable in air and are studied also under inert atmosphere. [13] Samarium monophosphide SmP is a semiconductor with the bandgap of 1.10 eV, the same as in silicon, and high electrical conductivity of n-type. It can be ...
1 Chemical properties. 2 References. ... Download QR code; Print/export Download as PDF; Printable version; In other projects ... Samarium (III) hydroxide is an ...
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Samarium(III) oxalate is an inorganic compound, a salt of samarium and oxalic acid with the formula Sm 2 (C 2 O 4) 3. [1] The compound does not dissolve in water, forms a crystalline hydrate with yellow crystals.
Samarium(III) iodide is a yellow powder that is unstable in air and decomposes in water . [1] When heated with metallic samarium, it forms samarium diiodide: [4] + Reduction by hydrogen also affords samarium diiodide:
Samarium(III) perchlorate can be obtained by the reaction of perchloric acid and samarium(III) oxide. [3] The hydrate precipitated from the solution can be dehydrated with dichlorine hexoxide to obtain the anhydrous form.